Wildlife on the runway delays a flight, while a four-engine airliner attempts a night landing at a remote airport during a power outage; cargo handlers deliver 1,000 pounds of fresh flowers for Mother's Day as a patrol plane identifies fires in Kruger National Park; the flight crew manages the navigation of the heavy aircraft without ground lighting, and ground teams coordinate the distribution of perishable goods across the region.

Customs agents intercept a grenade launcher smuggled into the U.S.; a blizzard threatens to cut off a remote island airport; warm winter weather turns a village runway to mud.

Viewing Southern Italy from the air; Greek temples on the Mediterranean; cities that just seem to float above the sea; one of the most powerful volcanoes on Earth.

Wildlife on the runway delays a flight, while a four-engine airliner attempts a night landing at a remote airport during a power outage; cargo handlers deliver 1,000 pounds of fresh flowers for Mother's Day as a patrol plane identifies fires in Kruger National Park; the flight crew manages the navigation of the heavy aircraft without ground lighting, and ground teams coordinate the distribution of perishable goods across the region.

Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32.

Uncover the secrets of the Old Kingdom ruler who revolutionized architecture alongside his vizier, Imhotep; piece together the mysterious life of the very first king to build a step pyramid in the heart of a grandiose and complex burial site.

Customs agents intercept a grenade launcher smuggled into the U.S.; a blizzard threatens to cut off a remote island airport; warm winter weather turns a village runway to mud.

Traveling the Dordogne River via traditional boats through the green heart of southwest France; drinking wine and hunting for truffles; riding a luxury cruiser to a lighthouse built for a king.

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

Jeremy Birch takes on a salvage to raise a vessel with a concrete hull; it's been in the Fraser River for a month, collecting silt and mud, adding 30 tons to its deadweight.

Traveling the Dordogne River via traditional boats through the green heart of southwest France; drinking wine and hunting for truffles; riding a luxury cruiser to a lighthouse built for a king.

Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest.

Jeremy Birch takes on a salvage to raise a vessel with a concrete hull; it's been in the Fraser River for a month, collecting silt and mud, adding 30 tons to its deadweight.

Ramesses II reigns for 66 years and builds monuments and temples.

Delve into the history of the Fourth Dynasty monarch responsible for one of the great pyramids; examine the tyrannical reputation of this ancient leader and decipher the complex strategies he used to guide such a massive building project.

Wildlife on the runway delays a flight, while a four-engine airliner attempts a night landing at a remote airport during a power outage; cargo handlers deliver 1,000 pounds of fresh flowers for Mother's Day as a patrol plane identifies fires in Kruger National Park; the flight crew manages the navigation of the heavy aircraft without ground lighting, and ground teams coordinate the distribution of perishable goods across the region.

Customs agents intercept a grenade launcher smuggled into the U.S.; a blizzard threatens to cut off a remote island airport; warm winter weather turns a village runway to mud.

Viewing Southern Italy from the air; Greek temples on the Mediterranean; cities that just seem to float above the sea; one of the most powerful volcanoes on Earth.

Wildlife on the runway delays a flight, while a four-engine airliner attempts a night landing at a remote airport during a power outage; cargo handlers deliver 1,000 pounds of fresh flowers for Mother's Day as a patrol plane identifies fires in Kruger National Park; the flight crew manages the navigation of the heavy aircraft without ground lighting, and ground teams coordinate the distribution of perishable goods across the region.

Customs agents intercept a grenade launcher smuggled into the U.S.; a blizzard threatens to cut off a remote island airport; warm winter weather turns a village runway to mud.

Viewing Southern Italy from the air; Greek temples on the Mediterranean; cities that just seem to float above the sea; one of the most powerful volcanoes on Earth.

Observe the peak of experimental tank design as the war reaches its climax. Follow the action in Burma and the beaches of Normandy to see how both outdated machines and highly specialized new models fought to turn the tide for the Allies.

The legendary Battle of Trafalgar in 1805, which pitted Napoleon's French ships against a British armada under the command of Admiral Horatio Nelson.

Consider the factors that inevitably cause dictatorships to crumble; look at how hubris destroys cults of personality; see how factions fracture military dictatorships; weigh the miscalculations that turn the tide against tyranny.

Observe the peak of experimental tank design as the war reaches its climax. Follow the action in Burma and the beaches of Normandy to see how both outdated machines and highly specialized new models fought to turn the tide for the Allies.

The legendary Battle of Trafalgar in 1805, which pitted Napoleon's French ships against a British armada under the command of Admiral Horatio Nelson.

Consider the factors that inevitably cause dictatorships to crumble; look at how hubris destroys cults of personality; see how factions fracture military dictatorships; weigh the miscalculations that turn the tide against tyranny.

Observe the peak of experimental tank design as the war reaches its climax. Follow the action in Burma and the beaches of Normandy to see how both outdated machines and highly specialized new models fought to turn the tide for the Allies.

Ramesses II reigns for 66 years and builds monuments and temples.

Delve into the history of the Fourth Dynasty monarch responsible for one of the great pyramids; examine the tyrannical reputation of this ancient leader and decipher the complex strategies he used to guide such a massive building project.

Observe the peak of experimental tank design as the war reaches its climax. Follow the action in Burma and the beaches of Normandy to see how both outdated machines and highly specialized new models fought to turn the tide for the Allies.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia-Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

Confront objects that make no sense; spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicolored pools across northern Ethiopia and a huge human figure hidden in the Australian outback.

Chris Ward sets out with Josh Moreira and Ward's younger brother to salvage a light aircraft that's sitting on the seabed; Jeremy Birch braves the arctic conditions to salvage two vessels that have fallen prey to the crushing ice conditions.

Rumoured to be the cleanest river in Europe, few dispute it's the coldest; cascading down from the Dinaric Alps in Serbia, it soon crosses the border into Bosnia-Herzegovina, where marine biologist and fisherman Sanel Riđanović casts for salmon.

Confront objects that make no sense; spot a spinning island in an Argentinian marsh, a colossal triangle stuck in the Arizona desert, mysterious multicolored pools across northern Ethiopia and a huge human figure hidden in the Australian outback.

Chris Ward sets out with Josh Moreira and Ward's younger brother to salvage a light aircraft that's sitting on the seabed; Jeremy Birch braves the arctic conditions to salvage two vessels that have fallen prey to the crushing ice conditions.

Chart the turbulent reign of a brilliant strategist who allied herself with powerful Roman leaders in the hopes of saving her kingdom; examine the battle against Octavian that ended three millennia of Egyptian history and sealed Cleopatra's fate.

Unearth the dramatic final days of the Twentieth Dynasty's great warrior king, Ramses III; view a rare judicial papyrus that recounts the story of an assassination plot hatched in the royal harem; see what the monarch's mummy reveals today.

Observe the peak of experimental tank design as the war reaches its climax. Follow the action in Burma and the beaches of Normandy to see how both outdated machines and highly specialized new models fought to turn the tide for the Allies.

The legendary Battle of Trafalgar in 1805, which pitted Napoleon's French ships against a British armada under the command of Admiral Horatio Nelson.

Consider the factors that inevitably cause dictatorships to crumble; look at how hubris destroys cults of personality; see how factions fracture military dictatorships; weigh the miscalculations that turn the tide against tyranny.

Observe the peak of experimental tank design as the war reaches its climax. Follow the action in Burma and the beaches of Normandy to see how both outdated machines and highly specialized new models fought to turn the tide for the Allies.

The legendary Battle of Trafalgar in 1805, which pitted Napoleon's French ships against a British armada under the command of Admiral Horatio Nelson.

Consider the factors that inevitably cause dictatorships to crumble; look at how hubris destroys cults of personality; see how factions fracture military dictatorships; weigh the miscalculations that turn the tide against tyranny.

Uncovering the design and engineering secrets behind the Grand Canyon Skywalk, the Audain Museum and more.

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

Delve into the history of the Fourth Dynasty monarch responsible for one of the great pyramids; examine the tyrannical reputation of this ancient leader and decipher the complex strategies he used to guide such a massive building project.

Uncovering the design and engineering secrets behind the Grand Canyon Skywalk, the Audain Museum and more.

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

Delve into the history of the Fourth Dynasty monarch responsible for one of the great pyramids; examine the tyrannical reputation of this ancient leader and decipher the complex strategies he used to guide such a massive building project.

Uncovering the design and engineering secrets behind the Grand Canyon Skywalk, the Audain Museum and more.

Chart the turbulent reign of a brilliant strategist who allied herself with powerful Roman leaders in the hopes of saving her kingdom; examine the battle against Octavian that ended three millennia of Egyptian history and sealed Cleopatra's fate.

Unearth the dramatic final days of the Twentieth Dynasty's great warrior king, Ramses III; view a rare judicial papyrus that recounts the story of an assassination plot hatched in the royal harem; see what the monarch's mummy reveals today.

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

Bundles of cedar wood tree trunks are smashed apart, releasing thousands of logs on the shoreline; Jeremy and his crew must work fast to recover the cargo.

Tackling the grade 6 rapids and untamed waters of the Buller River on the west coast of New Zealand's South Island, blessed by a Māori elder of the Ngāti Apa ki te Rā Tō.

Take a deep dive into watery enigmas; glide over a sunken Italian city; a unique underwater cemetery in the Florida Keys; a yellow brick road to nowhere in the depths of the North Pacific; puzzling rocky constructions off the coast of Australia.

Bundles of cedar wood tree trunks are smashed apart, releasing thousands of logs on the shoreline; Jeremy and his crew must work fast to recover the cargo.

Navigating the narrow, deep fjords that lead to Narvik, Norway, where German and British forces faced off in April 1940; repeated torpedo failures threatened to sink the mission and leave Hitler's invading troops exposed and vulnerable.

Learning why a clash over Nazi ideology wrecked a bright U-boat commander's career.

Uncovering the design and engineering secrets behind the Grand Canyon Skywalk, the Audain Museum and more.

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

Delve into the history of the Fourth Dynasty monarch responsible for one of the great pyramids; examine the tyrannical reputation of this ancient leader and decipher the complex strategies he used to guide such a massive building project.

Uncovering the design and engineering secrets behind the Grand Canyon Skywalk, the Audain Museum and more.

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

Delve into the history of the Fourth Dynasty monarch responsible for one of the great pyramids; examine the tyrannical reputation of this ancient leader and decipher the complex strategies he used to guide such a massive building project.

The first great empire of the Akkadians, led by Sargon the Great, dominated the Fertile Crescent, replacing the Sumerians and extending its influence as far north as Syria and south as Oman.

Open burial sites filled with secrets. Find powerful artifacts in a French rulers tomb, see what a tomb adorned with conch shells says about sacred ceremonies, and expose complex beliefs about animals and the afterlife in an Egyptian zoo graveyard.

Question whether Napoleon Bonaparte was poisoned in exile, then find out whose bones were buried underneath Benjamin Franklin's London home; analyze evidence that suggests that Grand Duchess Anastasia may have escaped the 1918 Romanov massacre.

The first great empire of the Akkadians, led by Sargon the Great, dominated the Fertile Crescent, replacing the Sumerians and extending its influence as far north as Syria and south as Oman.

Open burial sites filled with secrets. Find powerful artifacts in a French rulers tomb, see what a tomb adorned with conch shells says about sacred ceremonies, and expose complex beliefs about animals and the afterlife in an Egyptian zoo graveyard.

Question whether Napoleon Bonaparte was poisoned in exile, then find out whose bones were buried underneath Benjamin Franklin's London home; analyze evidence that suggests that Grand Duchess Anastasia may have escaped the 1918 Romanov massacre.

The first great empire of the Akkadians, led by Sargon the Great, dominated the Fertile Crescent, replacing the Sumerians and extending its influence as far north as Syria and south as Oman.

Navigating the narrow, deep fjords that lead to Narvik, Norway, where German and British forces faced off in April 1940; repeated torpedo failures threatened to sink the mission and leave Hitler's invading troops exposed and vulnerable.

Learning why a clash over Nazi ideology wrecked a bright U-boat commander's career.

Question whether Napoleon Bonaparte was poisoned in exile, then find out whose bones were buried underneath Benjamin Franklin's London home; analyze evidence that suggests that Grand Duchess Anastasia may have escaped the 1918 Romanov massacre.

The St. Lawrence River is one that forged North America, allowing ships to traverse the continent; the adventure begins in Canada's first capital city of Kingston and near Canada's second-largest city of Montreal.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

Arctic conditions continue to wreak havoc in British Columbia; Jeremy Birch is called upon to raise a concrete-hulled vessel.

The St. Lawrence River is one that forged North America, allowing ships to traverse the continent; the adventure begins in Canada's first capital city of Kingston and near Canada's second-largest city of Montreal.

Psychedelic swirls in the Utah wastelands; a bizarre configuration of circles in the Sahara; hidden lines with the help of a drone; a remote polka-dot lake in Canada.

Arctic conditions continue to wreak havoc in British Columbia; Jeremy Birch is called upon to raise a concrete-hulled vessel.

Retracing the steps of a German U-boat that's willing to do anything to replace its dwindling fuel and food stores, and get back to port; examining how the crew, plagued by scurvy, turns the tables on the US submarines that try to ram their ship.

A US sub shows unbelievable courage in the face of impossible odds. A look into how a bomb dropped by the Japanese forces pushes the craft into a deadly dive, and ignites a toxic chemical fire that leaves the crew fighting for their lives.

The first great empire of the Akkadians, led by Sargon the Great, dominated the Fertile Crescent, replacing the Sumerians and extending its influence as far north as Syria and south as Oman.

Open burial sites filled with secrets. Find powerful artifacts in a French rulers tomb, see what a tomb adorned with conch shells says about sacred ceremonies, and expose complex beliefs about animals and the afterlife in an Egyptian zoo graveyard.

Question whether Napoleon Bonaparte was poisoned in exile, then find out whose bones were buried underneath Benjamin Franklin's London home; analyze evidence that suggests that Grand Duchess Anastasia may have escaped the 1918 Romanov massacre.

The first great empire of the Akkadians, led by Sargon the Great, dominated the Fertile Crescent, replacing the Sumerians and extending its influence as far north as Syria and south as Oman.

Open burial sites filled with secrets. Find powerful artifacts in a French rulers tomb, see what a tomb adorned with conch shells says about sacred ceremonies, and expose complex beliefs about animals and the afterlife in an Egyptian zoo graveyard.

Question whether Napoleon Bonaparte was poisoned in exile, then find out whose bones were buried underneath Benjamin Franklin's London home; analyze evidence that suggests that Grand Duchess Anastasia may have escaped the 1918 Romanov massacre.

In pursuit of their Aryan dream, the Nazis were encumbered by an ideological war from within that would undermine their ability to succeed in World War II.

The inside story of the F-86 Sabre, one of America's first fighter jets, and its epic battles against the Soviet MiG jet during the Korean War and beyond.

Relive the daring 17-minute hostage rescue at the Iranian Embassy in London that was caught on live TV. Learn how US teams ran deniable missions in Southeast Asia, then see the global threat of a Russian nuclear cruise missile with limitless range.

In pursuit of their Aryan dream, the Nazis were encumbered by an ideological war from within that would undermine their ability to succeed in World War II.

The inside story of the F-86 Sabre, one of America's first fighter jets, and its epic battles against the Soviet MiG jet during the Korean War and beyond.

Relive the daring 17-minute hostage rescue at the Iranian Embassy in London that was caught on live TV. Learn how US teams ran deniable missions in Southeast Asia, then see the global threat of a Russian nuclear cruise missile with limitless range.

In pursuit of their Aryan dream, the Nazis were encumbered by an ideological war from within that would undermine their ability to succeed in World War II.

Retracing the steps of a German U-boat that's willing to do anything to replace its dwindling fuel and food stores, and get back to port; examining how the crew, plagued by scurvy, turns the tables on the US submarines that try to ram their ship.

A US sub shows unbelievable courage in the face of impossible odds. A look into how a bomb dropped by the Japanese forces pushes the craft into a deadly dive, and ignites a toxic chemical fire that leaves the crew fighting for their lives.

In pursuit of their Aryan dream, the Nazis were encumbered by an ideological war from within that would undermine their ability to succeed in World War II.

Navigating the historic Potomac River from West Virginia to Chesapeake Bay, passing through Washington, D.C. and the national monuments and ending at George Washington's Mount Vernon estate.

Learning why an important urban center is sinking toward oblivion; soaring over sprawling ruins buried under Saharan sands; learning the modern secret of an ancient fortress; eyeing a ghost town on the edge of the Gobi.

Phil Risko's team at Northstar works fast to refloat a trawler that's been blown onto the shore of a national park in New Jersey; the team improvises to get it back to sea before it suffers further damage.

Navigating the historic Potomac River from West Virginia to Chesapeake Bay, passing through Washington, D.C. and the national monuments and ending at George Washington's Mount Vernon estate.

Learning why an important urban center is sinking toward oblivion; soaring over sprawling ruins buried under Saharan sands; learning the modern secret of an ancient fortress; eyeing a ghost town on the edge of the Gobi.

In the future, telescopes will allow scientists to see further to planets that may support life.

Paid programming.

Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32.

Uncover the secrets of the Old Kingdom ruler who revolutionized architecture alongside his vizier, Imhotep; piece together the mysterious life of the very first king to build a step pyramid in the heart of a grandiose and complex burial site.

Ramesses II reigns for 66 years and builds monuments and temples.

The inside story of the F-86 Sabre, one of America's first fighter jets, and its epic battles against the Soviet MiG jet during the Korean War and beyond.

Relive the daring 17-minute hostage rescue at the Iranian Embassy in London that was caught on live TV. Learn how US teams ran deniable missions in Southeast Asia, then see the global threat of a Russian nuclear cruise missile with limitless range.

In pursuit of their Aryan dream, the Nazis were encumbered by an ideological war from within that would undermine their ability to succeed in World War II.

The inside story of the F-86 Sabre, one of America's first fighter jets, and its epic battles against the Soviet MiG jet during the Korean War and beyond.

Relive the daring 17-minute hostage rescue at the Iranian Embassy in London that was caught on live TV. Learn how US teams ran deniable missions in Southeast Asia, then see the global threat of a Russian nuclear cruise missile with limitless range.

Track German tank commander Georg Gaertner, vanishes from a U.S. POW camp and eludes the FBI for 40 years; learn how two escaped Auschwitz prisoners help save countless lives and how Nazi officer Adolf Eichmann is finally brought to justice.

An American 2nd lieutenant sends his company back during an enemy counterattack during the Allied bid to clear the Colmar Pocket; he tries to hold off the German soldiers with his carbine rifle and calling in artillery but runs out of bullets.

The story of "America's first serial killer," who stalked Chicago in the 1890s, and how the police departments of two major cities finally brought him to justice.

Track German tank commander Georg Gaertner, vanishes from a U.S. POW camp and eludes the FBI for 40 years; learn how two escaped Auschwitz prisoners help save countless lives and how Nazi officer Adolf Eichmann is finally brought to justice.

An American 2nd lieutenant sends his company back during an enemy counterattack during the Allied bid to clear the Colmar Pocket; he tries to hold off the German soldiers with his carbine rifle and calling in artillery but runs out of bullets.

The story of "America's first serial killer," who stalked Chicago in the 1890s, and how the police departments of two major cities finally brought him to justice.

Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32.

Uncover the secrets of the Old Kingdom ruler who revolutionized architecture alongside his vizier, Imhotep; piece together the mysterious life of the very first king to build a step pyramid in the heart of a grandiose and complex burial site.

Ramesses II reigns for 66 years and builds monuments and temples.

Delve into the history of the Fourth Dynasty monarch responsible for one of the great pyramids; examine the tyrannical reputation of this ancient leader and decipher the complex strategies he used to guide such a massive building project.

A journey down one of the wild rivers in the world, the Yukon; the unusual trip starts in an aircraft piloted by a painter and the odyssey ends with a visit to a graveyard of disintegrating rear-wheel steamers.

Get petrified by cryptic rock structures normally hidden from view; look inside curious dwellings in the Peruvian Andes; visit a sacred monolith in Wyoming's Black Hills; haunt a Turkish stone village; spot an immovable waterfall in Mexico.

At the mouth of the Suez Canal, Lino Arosemena and his crew have a monster repair job of removing and refitting a 20-ton propeller.

A journey down one of the wild rivers in the world, the Yukon; the unusual trip starts in an aircraft piloted by a painter and the odyssey ends with a visit to a graveyard of disintegrating rear-wheel steamers.

Get petrified by cryptic rock structures normally hidden from view; look inside curious dwellings in the Peruvian Andes; visit a sacred monolith in Wyoming's Black Hills; haunt a Turkish stone village; spot an immovable waterfall in Mexico.

In an attempt to view the cosmos beyond the scope of human vision, infrared light and gamma radiation are used.

Paid programming.

Delve into the history of the Fourth Dynasty monarch responsible for one of the great pyramids; examine the tyrannical reputation of this ancient leader and decipher the complex strategies he used to guide such a massive building project.

Chart the turbulent reign of a brilliant strategist who allied herself with powerful Roman leaders in the hopes of saving her kingdom; examine the battle against Octavian that ended three millennia of Egyptian history and sealed Cleopatra's fate.

Track German tank commander Georg Gaertner, vanishes from a U.S. POW camp and eludes the FBI for 40 years; learn how two escaped Auschwitz prisoners help save countless lives and how Nazi officer Adolf Eichmann is finally brought to justice.

An American 2nd lieutenant sends his company back during an enemy counterattack during the Allied bid to clear the Colmar Pocket; he tries to hold off the German soldiers with his carbine rifle and calling in artillery but runs out of bullets.

The story of "America's first serial killer," who stalked Chicago in the 1890s, and how the police departments of two major cities finally brought him to justice.

Track German tank commander Georg Gaertner, vanishes from a U.S. POW camp and eludes the FBI for 40 years; learn how two escaped Auschwitz prisoners help save countless lives and how Nazi officer Adolf Eichmann is finally brought to justice.

An American 2nd lieutenant sends his company back during an enemy counterattack during the Allied bid to clear the Colmar Pocket; he tries to hold off the German soldiers with his carbine rifle and calling in artillery but runs out of bullets.

The story of "America's first serial killer," who stalked Chicago in the 1890s, and how the police departments of two major cities finally brought him to justice.

Visiting the Vancouver House, Norway's Under restaurant and the Seattle Central Library to discover how these visionary buildings were created.

Mike is in Iceland, where teams harness the power of volcanos to keep the geothermal energy flowing; they battle harsh weather to maintain and upgrade giant power systems, fixing miles of steam pipes, and bringing a dead well back to life.

Going under one of the world's largest lakes for a multi-million dollar tunnel boring project in one of the fastest growing cities on Earth.

Visiting the Vancouver House, Norway's Under restaurant and the Seattle Central Library to discover how these visionary buildings were created.

Mike is in Iceland, where teams harness the power of volcanos to keep the geothermal energy flowing; they battle harsh weather to maintain and upgrade giant power systems, fixing miles of steam pipes, and bringing a dead well back to life.

Going under one of the world's largest lakes for a multi-million dollar tunnel boring project in one of the fastest growing cities on Earth.

Chart the turbulent reign of a brilliant strategist who allied herself with powerful Roman leaders in the hopes of saving her kingdom; examine the battle against Octavian that ended three millennia of Egyptian history and sealed Cleopatra's fate.

Unearth the dramatic final days of the Twentieth Dynasty's great warrior king, Ramses III; view a rare judicial papyrus that recounts the story of an assassination plot hatched in the royal harem; see what the monarch's mummy reveals today.

Navigating the narrow, deep fjords that lead to Narvik, Norway, where German and British forces faced off in April 1940; repeated torpedo failures threatened to sink the mission and leave Hitler's invading troops exposed and vulnerable.

Learning why a clash over Nazi ideology wrecked a bright U-boat commander's career.

Meandering through the black waters of a primordial river immortalized in a folk song.

Witness animal spectacles from high above the Earth; watch a whirling herd of northern nomads; see undersea behemoths show off in the Pacific shallows; track a U.S. porcine stampede; confront top ocean predators on the Florida coast.

Veteran salvor Paul Hay and his team rescue a clam-dredging crew's harvest lost in a storm off the New Jersey coast; following an annual cleanup operation in New Zealand that salvages fishing equipment gone astray.

Meandering through the black waters of a primordial river immortalized in a folk song.

Witness animal spectacles from high above the Earth; watch a whirling herd of northern nomads; see undersea behemoths show off in the Pacific shallows; track a U.S. porcine stampede; confront top ocean predators on the Florida coast.

Veteran salvor Paul Hay and his team rescue a clam-dredging crew's harvest lost in a storm off the New Jersey coast; following an annual cleanup operation in New Zealand that salvages fishing equipment gone astray.

Look into the strange disappearance of the Lost Colony of Roanoke in 1590, then discover how the Hope Diamond was stolen during the French Revolution; pinpoint new clues that could explain why the USS Cyclops vanished in 1918 in the Bermuda Triangle.

Contemplate the strange disappearance and reappearance of the master of macabre, Edgar Allan Poe, just before his death in 1849; explore the chilling rumor that Shakespeare's grave was robbed, then chase down thieves who stole the Mona Lisa in 1911.

Visiting the Vancouver House, Norway's Under restaurant and the Seattle Central Library to discover how these visionary buildings were created.

Mike is in Iceland, where teams harness the power of volcanos to keep the geothermal energy flowing; they battle harsh weather to maintain and upgrade giant power systems, fixing miles of steam pipes, and bringing a dead well back to life.

Going under one of the world's largest lakes for a multi-million dollar tunnel boring project in one of the fastest growing cities on Earth.

Visiting the Vancouver House, Norway's Under restaurant and the Seattle Central Library to discover how these visionary buildings were created.

Mike is in Iceland, where teams harness the power of volcanos to keep the geothermal energy flowing; they battle harsh weather to maintain and upgrade giant power systems, fixing miles of steam pipes, and bringing a dead well back to life.

Going under one of the world's largest lakes for a multi-million dollar tunnel boring project in one of the fastest growing cities on Earth.

An airliner dodges thunderstorms flying to a cyclone-damaged island; aerial firefighters cross the country to battle infernos; daredevil chainsaw operators hang underneath helicopters.

Bush aviators push the limit of their plane to deliver a two-ton generator; in Fairbanks, slippery runways threaten the International Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 uncovers a potential issue.

A journey across Central Italy from the air reveals the ancient Rome, the bloody medieval battles of Tuscany and the colossal marble quarries of Carrara.

An airliner dodges thunderstorms flying to a cyclone-damaged island; aerial firefighters cross the country to battle infernos; daredevil chainsaw operators hang underneath helicopters.

Bush aviators push the limit of their plane to deliver a two-ton generator; in Fairbanks, slippery runways threaten the International Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 uncovers a potential issue.

A journey across Central Italy from the air reveals the ancient Rome, the bloody medieval battles of Tuscany and the colossal marble quarries of Carrara.

An airliner dodges thunderstorms flying to a cyclone-damaged island; aerial firefighters cross the country to battle infernos; daredevil chainsaw operators hang underneath helicopters.

Look into the strange disappearance of the Lost Colony of Roanoke in 1590, then discover how the Hope Diamond was stolen during the French Revolution; pinpoint new clues that could explain why the USS Cyclops vanished in 1918 in the Bermuda Triangle.

Contemplate the strange disappearance and reappearance of the master of macabre, Edgar Allan Poe, just before his death in 1849; explore the chilling rumor that Shakespeare's grave was robbed, then chase down thieves who stole the Mona Lisa in 1911.

Bush aviators push the limit of their plane to deliver a two-ton generator; in Fairbanks, slippery runways threaten the International Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 uncovers a potential issue.

A journey on Scotland's River Spey, traveling from its source in the Highlands, winding by boat through the mountains to where the river meets the North Sea.

Get a bird's-eye view of a mysterious explosion in China and a quickly melting glacier on Earth's iciest continent; investigate an orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

Capt. John Ward and his crew are called to raise a sunken houseboat near Pensacola, Fla.; the owner of the boat wants it back, but the current occupiers of the boat living in it don't want John's services; there've been reports of gunfire too.

A journey on Scotland's River Spey, traveling from its source in the Highlands, winding by boat through the mountains to where the river meets the North Sea.

Get a bird's-eye view of a mysterious explosion in China and a quickly melting glacier on Earth's iciest continent; investigate an orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

Capt. John Ward and his crew are called to raise a sunken houseboat near Pensacola, Fla.; the owner of the boat wants it back, but the current occupiers of the boat living in it don't want John's services; there've been reports of gunfire too.

Investigate the sudden death of a tycoon linked to King Tut's tomb; search for three lighthouse keepers who vanished from the Flannan Isles, then analyze the gruesome, unexplained deaths of nine hikers at the Dyatlov Pass in the Ural Mountains.

Uncover how a royal imprisoned two princes and took the British throne; ponder how the Irish crown jewels were stolen from a locked safe inside Dublin Castle, then see if the death of Amy Robsart at Elizabeth I's court was an accident or murder.

An airliner dodges thunderstorms flying to a cyclone-damaged island; aerial firefighters cross the country to battle infernos; daredevil chainsaw operators hang underneath helicopters.

Bush aviators push the limit of their plane to deliver a two-ton generator; in Fairbanks, slippery runways threaten the International Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 uncovers a potential issue.

A journey across Central Italy from the air reveals the ancient Rome, the bloody medieval battles of Tuscany and the colossal marble quarries of Carrara.

An airliner dodges thunderstorms flying to a cyclone-damaged island; aerial firefighters cross the country to battle infernos; daredevil chainsaw operators hang underneath helicopters.

Bush aviators push the limit of their plane to deliver a two-ton generator; in Fairbanks, slippery runways threaten the International Ice Carving Championship and a high-tech airframe inspection on a Boeing 737 uncovers a potential issue.

A journey across Central Italy from the air reveals the ancient Rome, the bloody medieval battles of Tuscany and the colossal marble quarries of Carrara.

Follow American M18 Hellcat tank destroyers as they sweep to victory across Europe and watch flamethrower tanks help the Allies claim island after island in Japan. Then see how WW II's lessons culminated in the modern main battle tank.

A portrayal of a crucial September 1950 military operation that helped the UN and ROK gain the upper hand over North Korea in the Korean War.

Tease out the common denominators that lead to tyranny; map the rise of some of the 20th century's dictators and discover how they seized power, exploited governing systems and gutted existing power structures to gain total control.

Follow American M18 Hellcat tank destroyers as they sweep to victory across Europe and watch flamethrower tanks help the Allies claim island after island in Japan. Then see how WW II's lessons culminated in the modern main battle tank.

A portrayal of a crucial September 1950 military operation that helped the UN and ROK gain the upper hand over North Korea in the Korean War.

Tease out the common denominators that lead to tyranny; map the rise of some of the 20th century's dictators and discover how they seized power, exploited governing systems and gutted existing power structures to gain total control.

Follow American M18 Hellcat tank destroyers as they sweep to victory across Europe and watch flamethrower tanks help the Allies claim island after island in Japan. Then see how WW II's lessons culminated in the modern main battle tank.

Investigate the sudden death of a tycoon linked to King Tut's tomb; search for three lighthouse keepers who vanished from the Flannan Isles, then analyze the gruesome, unexplained deaths of nine hikers at the Dyatlov Pass in the Ural Mountains.

Uncover how a royal imprisoned two princes and took the British throne; ponder how the Irish crown jewels were stolen from a locked safe inside Dublin Castle, then see if the death of Amy Robsart at Elizabeth I's court was an accident or murder.

Follow American M18 Hellcat tank destroyers as they sweep to victory across Europe and watch flamethrower tanks help the Allies claim island after island in Japan. Then see how WW II's lessons culminated in the modern main battle tank.

A journey along Ireland's longest river, the Shannon, through an emerald green landscape of rolling hills and sparkling waters; how Vikings, monks and kings have all made their mark.

Examine mysterious holes in Israel; explore a ghost village hidden in the Colombian jungle, a shipwreck off the coast of Sri Lanka and a gutted airplane fuselage abandoned in Iceland.

John Ward and his crew are called to salvage a massive barge upturned by a storm in a canal; Hickory Scuba Divers work to salvage a valuable sailboat that's sunk at its mooring.

A journey along Ireland's longest river, the Shannon, through an emerald green landscape of rolling hills and sparkling waters; how Vikings, monks and kings have all made their mark.

Examine mysterious holes in Israel; explore a ghost village hidden in the Colombian jungle, a shipwreck off the coast of Sri Lanka and a gutted airplane fuselage abandoned in Iceland.

John Ward and his crew are called to salvage a massive barge upturned by a storm in a canal; Hickory Scuba Divers work to salvage a valuable sailboat that's sunk at its mooring.

Hunt for the Amber Room, a Nazi-looted treasure that disappeared in 1944; track the final flight of bandleader Glenn Miller over the English Channel, then re-examine the arrest of Anne Frank to see if she was betrayed or a victim of coincidence.

Question whether Napoleon Bonaparte was poisoned in exile, then find out whose bones were buried underneath Benjamin Franklin's London home; analyze evidence that suggests that Grand Duchess Anastasia may have escaped the 1918 Romanov massacre.

Follow American M18 Hellcat tank destroyers as they sweep to victory across Europe and watch flamethrower tanks help the Allies claim island after island in Japan. Then see how WW II's lessons culminated in the modern main battle tank.

A portrayal of a crucial September 1950 military operation that helped the UN and ROK gain the upper hand over North Korea in the Korean War.

Tease out the common denominators that lead to tyranny; map the rise of some of the 20th century's dictators and discover how they seized power, exploited governing systems and gutted existing power structures to gain total control.

Follow American M18 Hellcat tank destroyers as they sweep to victory across Europe and watch flamethrower tanks help the Allies claim island after island in Japan. Then see how WW II's lessons culminated in the modern main battle tank.

A portrayal of a crucial September 1950 military operation that helped the UN and ROK gain the upper hand over North Korea in the Korean War.

Tease out the common denominators that lead to tyranny; map the rise of some of the 20th century's dictators and discover how they seized power, exploited governing systems and gutted existing power structures to gain total control.

The engineering secrets behind the world's steepest mountain railway, a remodeled 145-year-old museum and a futuristic condo.

The Black Pyramid is a decaying brick-and-clay structure that contains an elaborate network of tunnels filled with ancient artifacts; Egyptologists use a mini-laser to uncover the mysteries contained within.

Chart the turbulent reign of a brilliant strategist who allied herself with powerful Roman leaders in the hopes of saving her kingdom; examine the battle against Octavian that ended three millennia of Egyptian history and sealed Cleopatra's fate.

The engineering secrets behind the world's steepest mountain railway, a remodeled 145-year-old museum and a futuristic condo.

The Black Pyramid is a decaying brick-and-clay structure that contains an elaborate network of tunnels filled with ancient artifacts; Egyptologists use a mini-laser to uncover the mysteries contained within.

Chart the turbulent reign of a brilliant strategist who allied herself with powerful Roman leaders in the hopes of saving her kingdom; examine the battle against Octavian that ended three millennia of Egyptian history and sealed Cleopatra's fate.

The engineering secrets behind the world's steepest mountain railway, a remodeled 145-year-old museum and a futuristic condo.

Hunt for the Amber Room, a Nazi-looted treasure that disappeared in 1944; track the final flight of bandleader Glenn Miller over the English Channel, then re-examine the arrest of Anne Frank to see if she was betrayed or a victim of coincidence.

Question whether Napoleon Bonaparte was poisoned in exile, then find out whose bones were buried underneath Benjamin Franklin's London home; analyze evidence that suggests that Grand Duchess Anastasia may have escaped the 1918 Romanov massacre.

Chart the turbulent reign of a brilliant strategist who allied herself with powerful Roman leaders in the hopes of saving her kingdom; examine the battle against Octavian that ended three millennia of Egyptian history and sealed Cleopatra's fate.

The journey down the attraction-packed Niagara River is filled with adventure and beauty; navigating the fascinating history and engineering of this border river between Canada and the United States, arriving at the world-famous Niagara Falls.

Investigate an abandoned village in the shifting sands on Dubai's outskirts and a collection of inexplicable stone circles in Colombia; a mysterious hilltop tower in Iran and a puzzling purple phenomenon in Chile's Atacama Desert.

Salvor and treasure seeker Phil Risko sets out to retrieve valuable 80-year-old hardwood logs from the bottom of the sea; a multi-million dollar cruise vessel undergoes emergency repairs in Panama.

The journey down the attraction-packed Niagara River is filled with adventure and beauty; navigating the fascinating history and engineering of this border river between Canada and the United States, arriving at the world-famous Niagara Falls.

Investigate an abandoned village in the shifting sands on Dubai's outskirts and a collection of inexplicable stone circles in Colombia; a mysterious hilltop tower in Iran and a puzzling purple phenomenon in Chile's Atacama Desert.

Salvor and treasure seeker Phil Risko sets out to retrieve valuable 80-year-old hardwood logs from the bottom of the sea; a multi-million dollar cruise vessel undergoes emergency repairs in Panama.

Joining the manhunt for three inmates who escaped Alcatraz in 1962; following the trail of pirate Henry Avery after he pulled off a massive heist in 1695, then stalking Axeman of New Orleans, a serial killer who taunted police but spared jazz lovers.

Revisit the crimes of Jack the Ripper as investigators try to ID his first victim; chase the Mad Gasser, who terrorized an Illinois town in 1944, then hunt for the Servant Girl Annihilator, a killer who stalked Austin, Texas, in the darkness.

The engineering secrets behind the world's steepest mountain railway, a remodeled 145-year-old museum and a futuristic condo.

The Black Pyramid is a decaying brick-and-clay structure that contains an elaborate network of tunnels filled with ancient artifacts; Egyptologists use a mini-laser to uncover the mysteries contained within.

Chart the turbulent reign of a brilliant strategist who allied herself with powerful Roman leaders in the hopes of saving her kingdom; examine the battle against Octavian that ended three millennia of Egyptian history and sealed Cleopatra's fate.

The engineering secrets behind the world's steepest mountain railway, a remodeled 145-year-old museum and a futuristic condo.