Defy gravity in an Amsterdam high-rise that hangs 164 feet above the water; marvel at three interconnected towers in Chicago that have a road running through them; examine the revolutionary framework of Paris' controversial Pompidou Centre.

Tallying the carnage that followed the disappearance of a Russian wonder; exploring Incan sacrificial rituals; studying a global rivalry sparked by an Egyptian stone; seeing the haunting paintings of a Spanish artist who descended into madness.

On the site of Dahshur, south of Cairo, are two revolutionary monuments which seem to be the first real pyramids.

Evidence is lost to a fire after a Cessna crash on a public road, challenging investigators.

Defy gravity in an Amsterdam high-rise that hangs 164 feet above the water; marvel at three interconnected towers in Chicago that have a road running through them; examine the revolutionary framework of Paris' controversial Pompidou Centre.

Tallying the carnage that followed the disappearance of a Russian wonder; exploring Incan sacrificial rituals; studying a global rivalry sparked by an Egyptian stone; seeing the haunting paintings of a Spanish artist who descended into madness.

On the site of Dahshur, south of Cairo, are two revolutionary monuments which seem to be the first real pyramids.

New York's Hudson River stretches 315 miles through natural landscapes, from the Adirondack Mountains to the George Washington Bridge and Statue of Liberty.

Get a birds-eye view of a mysterious, massive explosion in China and a quickly melting glacier on Earths iciest continent. Investigate a strange orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops.

The vast majority of information being gathered about Mars is by orbiters chronicling everything they can.

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Get a birds-eye view of a mysterious, massive explosion in China and a quickly melting glacier on Earths iciest continent. Investigate a strange orange haze enveloping the Big Apple, then float over a toxic, too-hot-to-handle lake in New Zealand.

New York's Hudson River stretches 315 miles through natural landscapes, from the Adirondack Mountains to the George Washington Bridge and Statue of Liberty.

The creation legends of Naikoon Provincial Park; rich sea lion colonies; remote lighthouses.

The Agoojj are a small fighting force of women in West Africa that expands in the 17th century against the much larger Asante and Yoruba Kingdoms; this all-female regiment terrifies both the local populations and the Europeans sent to conquer them.

An examination of the Earth's freshwater supply and the ongoing challenge to maintain its quantity and quality as the planet's population soars.

The Regulation Revolution of the 1970s was a time when consumers got hip, government got involved, and advertisers got scared into action.

The Agoojj are a small fighting force of women in West Africa that expands in the 17th century against the much larger Asante and Yoruba Kingdoms; this all-female regiment terrifies both the local populations and the Europeans sent to conquer them.

Uncover the luck and determination that helped POWs endure captivity, hunger, and acts of unthinkable brutality. Listen to the riveting stories of soldiers who survived infamous German stalags, Japanese forced-labour campaigns, and death marches.

Defy gravity in an Amsterdam high-rise that hangs 164 feet above the water; marvel at three interconnected towers in Chicago that have a road running through them; examine the revolutionary framework of Paris' controversial Pompidou Centre.

On the site of Dahshur, south of Cairo, are two revolutionary monuments which seem to be the first real pyramids.

The Draken crew gets a new captain, battles fierce winds and learns to accept defeat with Viking honor on the way to England.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

The Draken crew gets a new captain, battles fierce winds and learns to accept defeat with Viking honor on the way to England.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

The Navy's U.S.S. Macon flew in the 1930's, the golden age of airships, and was able to both launch and recover airplanes; telling the lost story of America's airships, their rapid rise, tragic demise, and the bold experiments in between.

The Draken crew gets a new captain, battles fierce winds and learns to accept defeat with Viking honor on the way to England.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

Bill Nighy narrates a trip along the River Po, traveling across northern Italy from the snow-capped Alps to the delta where it meets the Adriatic Sea.

Examine mysterious holes in Isreal; 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.

New York's Hudson River stretches 315 miles through natural landscapes, from the Adirondack Mountains to the George Washington Bridge and Statue of Liberty.

A cultural and geological past told through the stunning landscape of Gwaii Haanas National Park Reserve.

Examine mysterious holes in Isreal; 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.

Bill Nighy narrates a trip along the River Po, traveling across northern Italy from the snow-capped Alps to the delta where it meets the Adriatic Sea.

A cultural and geological past told through the stunning landscape of Gwaii Haanas National Park Reserve.

Incredible treasures left behind by the raiders that were never found are examined, revealing the source of Han's wealth and power.

A look at artists in film, dance, and sculpture whose works are uniquely American, including ballerina Misty Copeland, actress Nicole Kidman, and more.

The 1980s were a time when greed was good, 24-hour sponsored programming was legal, and advertising became entertainment.

Incredible treasures left behind by the raiders that were never found are examined, revealing the source of Han's wealth and power.

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

The lost city of Olous: A great metropolis submerged in the Mediterranean; archaeologists uncover its secrets using pioneering technology and CGI reconstruction.

A mass uprising that shows the world the truth about the Nazis' secret Sobibor death camp; learn how the Davao Dozen break out of a harsh Japanese penal colony and explore how two plucky German pilots plot to get out of Britain.

A countdown of the ten greatest military planes of World War II, including the Japanese Zero, the Nazi ME 109, and the B-29 Superfortress.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

A mass uprising that shows the world the truth about the Nazis' secret Sobibor death camp; learn how the Davao Dozen break out of a harsh Japanese penal colony and explore how two plucky German pilots plot to get out of Britain.

A countdown of the ten greatest military planes of World War II, including the Japanese Zero, the Nazi ME 109, and the B-29 Superfortress.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

A remote island linked to one of the world's most famous aviation mysteries; thousands of shipwrecks in the Bermuda triangle; a history lost and found in the South Pacific; a 10,000-year-old mystery in the murky depths of the Yucatan Peninsula.

A mass uprising that shows the world the truth about the Nazis' secret Sobibor death camp; learn how the Davao Dozen break out of a harsh Japanese penal colony and explore how two plucky German pilots plot to get out of Britain.

A countdown of the ten greatest military planes of World War II, including the Japanese Zero, the Nazi ME 109, and the B-29 Superfortress.

Dictators often attempt to expand their jurisdiction beyond the borders of their country; this usually means armed invasion and the death of large numbers of soldiers and civilians.

Exploring the Milky Way from the mythology of ancient sky watchers to how scientists are mapping it from the inside out.

Examining the science behind the birth of the universe.

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.

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.

Exploring the Milky Way from the mythology of ancient sky watchers to how scientists are mapping it from the inside out.

Examining the science behind the birth of the universe.

The creation legends of Naikoon Provincial Park; rich sea lion colonies; remote lighthouses.

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.

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.

A platoon of Canadian tank hunters engages a column of Nazi Panther tanks at nighttime.

Sit down with civilians who got caught in the crossfire; learn how an 11-year-old Jewish boy hid from the Nazis; meet an unjustly imprisoned Japanese-American who served his country; relive a young woman's Blitz experience.

Uncover the luck and determination that helped POWs endure captivity, hunger, and acts of unthinkable brutality. Listen to the riveting stories of soldiers who survived infamous German stalags, Japanese forced-labour campaigns, and death marches.

Get insight into one of the war's most hazardous jobs: piloting aircraft. Explore the constant race to provide more aerial firepower, revisit one of the war's most daring raids, and hear from a glider pilot who risked it all the night before D-Day.

A mass uprising that shows the world the truth about the Nazis' secret Sobibor death camp; learn how the Davao Dozen break out of a harsh Japanese penal colony and explore how two plucky German pilots plot to get out of Britain.

A countdown of the ten greatest military planes of World War II, including the Japanese Zero, the Nazi ME 109, and the B-29 Superfortress.

Dictators are characterized as charismatic, narcissistic and sadistic, but most of all by their thirst for power; once in power, holding on to it requires negotiation, coercion and force.

Eye-witness accounts from those who fought in the US military's bloodiest battle on the European front in World War II.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

Great Britain faces losing its battle for survival against German U-boats until a new source of intelligence turns the tide in 1941.

Eye-witness accounts from those who fought in the US military's bloodiest battle on the European front in World War II.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

Great Britain faces losing its battle for survival against German U-boats until a new source of intelligence turns the tide in 1941.

When seen from above, the pyramids of Giza align with the stars; survivors of Katrina find rescue when least expected; a volcano burns bright blue; a forgotten beach reveals its secrets.

Eye-witness accounts from those who fought in the US military's bloodiest battle on the European front in World War II.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

Great Britain faces losing its battle for survival against German U-boats until a new source of intelligence turns the tide in 1941.

Mercury, one of the nearest planets to earth, has eluded astronomers' best efforts to learn its secrets until missions like Mariner and Messenger.

Examining how cosmic rays are produced and what that can tell us about the universe.

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.

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.

Mercury, one of the nearest planets to earth, has eluded astronomers' best efforts to learn its secrets until missions like Mariner and Messenger.

Examining how cosmic rays are produced and what that can tell us about the universe.

A collection of scenic towns, parks and coastal rainforest unique in the world.

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.

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.

The origins of the Greek mythology about Amazons may lie with the ancient nomadic warriors of the Eurasian grasslands; hailing from the Scythian tribes, these warriors controlled a swathe from Eastern Europe to Central Asia.

Ancient Rome encourages gladiator women to fight to the death in the arena; these young women cultivate the skills they need to survive these gladiatorial games but sometimes die for the sake of public entertainment.

The Agoojj are a small fighting force of women in West Africa that expands in the 17th century against the much larger Asante and Yoruba Kingdoms; this all-female regiment terrifies both the local populations and the Europeans sent to conquer them.

Incredible treasures left behind by the raiders that were never found are examined, revealing the source of Han's wealth and power.

Eye-witness accounts from those who fought in the US military's bloodiest battle on the European front in World War II.

A different view of the events in the Arctic during World War II, with countless unknown details; a focus on the struggle of the great powers for control of the area and its natural resources.

Great Britain faces losing its battle for survival against German U-boats until a new source of intelligence turns the tide in 1941.

A heavy hauling helicopter flies across the frozen Bering Sea to the tiny island of Little Diomede, just 2.4 miles from Russia. At Fort Wainwright the Artic Angels prepare for a medevac mission and a veteran bush pilot tests his.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

A heavy hauling helicopter flies across the frozen Bering Sea to the tiny island of Little Diomede, just 2.4 miles from Russia. At Fort Wainwright the Artic Angels prepare for a medevac mission and a veteran bush pilot tests his.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

Strange aquatic mammals populating a river in Columbia; a ship marooned in a sea of sand along Namibia's notorious Skeleton Coast; a Boeing 727 jetliner hidden in a pine forest; an unusual pattern is discovered in the Nevada desert.

A heavy hauling helicopter flies across the frozen Bering Sea to the tiny island of Little Diomede, just 2.4 miles from Russia. At Fort Wainwright the Artic Angels prepare for a medevac mission and a veteran bush pilot tests his.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

Bill Nighy leads a magical journey in the Norfolk Broads along England's holiday river, the River Bure; discovering a watery world where both wildlife and recreation go hand in hand.

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.

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

BC's lower mainland is a mix of remote mountain ranges, spectacular cityscapes and marine life.

The Fermi Paradox asks why another civilization has not presented itself.

Paid programming.

The vast majority of information being gathered about Mars is by orbiters chronicling everything they can.

Examining Landsat 8, the advanced planetary explorer with a 900 million dollar price tag, which is designed to reveal complex and ever-changing details undetectable by the human eye.

BC's lower mainland is a mix of remote mountain ranges, spectacular cityscapes and marine life.

In Jordan and Saudi Arabia, two cities, Petra and Hegra, are thought to have been centers of a "lost matriarchy.".

Interviews with artists in film, theater, opera, and more who overcame poverty, physical disabilities, and trauma to achieve success, including Viola Davis.

Jackie Kennedy's crucial role in the Kennedy years; Dolley Madison's role; Nancy Reagan's role as a First Lady.

In Jordan and Saudi Arabia, two cities, Petra and Hegra, are thought to have been centers of a "lost matriarchy.".

The massive AC-130 provides unparalleled close air support to U.S. and allied ground troops.

Jackie Kennedy's crucial role in the Kennedy years; Dolley Madison's role; Nancy Reagan's role as a First Lady.

Tallying the carnage that followed the disappearance of a Russian wonder; exploring Incan sacrificial rituals; studying a global rivalry sparked by an Egyptian stone; seeing the haunting paintings of a Spanish artist who descended into madness.

Western Mexico reveals the country's most iconic images. From the birthplace of tequila and mariachi to the world's busiest border. Golden sands border the aquarium of the world while volcanic craters mirror lunar landscapes.

When seismic activity around Mount Spurr heats up, pilots fly supplies to farmers. The operations team at Anchorage International deal with two emergency landings and proud parents turn to pilots to get them to a vital school ba.

A bush airport fights fire with fire. Flying Namibian cowboys race against the heat to save antelope from drought. A father and son duo of mechanics tackle a test that could make or break their careers, and an endangered Pangoli.

Western Mexico reveals the country's most iconic images. From the birthplace of tequila and mariachi to the world's busiest border. Golden sands border the aquarium of the world while volcanic craters mirror lunar landscapes.

When seismic activity around Mount Spurr heats up, pilots fly supplies to farmers. The operations team at Anchorage International deal with two emergency landings and proud parents turn to pilots to get them to a vital school ba.

A bush airport fights fire with fire. Flying Namibian cowboys race against the heat to save antelope from drought. A father and son duo of mechanics tackle a test that could make or break their careers, and an endangered Pangoli.

Dive into the historical and natural secrets of the deep; explore an uninhabited concrete island, ocean spirals off the Australian coast, underwater evidence of a violent past and tracks thousands of metres below the sea's surface.

Western Mexico reveals the country's most iconic images. From the birthplace of tequila and mariachi to the world's busiest border. Golden sands border the aquarium of the world while volcanic craters mirror lunar landscapes.

When seismic activity around Mount Spurr heats up, pilots fly supplies to farmers. The operations team at Anchorage International deal with two emergency landings and proud parents turn to pilots to get them to a vital school ba.

A bush airport fights fire with fire. Flying Namibian cowboys race against the heat to save antelope from drought. A father and son duo of mechanics tackle a test that could make or break their careers, and an endangered Pangoli.

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.

Come across a set of disturbingly familiar stone monoliths in Colombia, then explore a lost city in the Sierra Nevada de Santa Marta; puzzle over an ancient ruin in Corinth, Greece, and explore an old structure on a Maltese island.

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.

The Sea to Sky corridor reveals one of the west coast's most iconic landscapes.

How humans discovered the planets and how they became a complex solar system.

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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.

The Sea to Sky corridor reveals one of the west coast's most iconic landscapes.

After the king of France targets the Knights Templar, they face imprisonment, torture and executions, but their legacy endures through present day.

A collection of artists who look to the Earth for inspiration, including a wildlife photographer, an orchestra that turns trash into musical instruments and more.

Lady Bird Johnson, Edith Roosevelt and Betty Ford inherited the role of First Lady by chance during times when the nation was looking for stability.

After the king of France targets the Knights Templar, they face imprisonment, torture and executions, but their legacy endures through present day.

The brief but historic service of the Grumman F6F Hellcat and its instrumental role in winning the Pacific War.

When seismic activity around Mount Spurr heats up, pilots fly supplies to farmers. The operations team at Anchorage International deal with two emergency landings and proud parents turn to pilots to get them to a vital school ba.

A bush airport fights fire with fire. Flying Namibian cowboys race against the heat to save antelope from drought. A father and son duo of mechanics tackle a test that could make or break their careers, and an endangered Pangoli.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

Revealing the truth behind the planet's ancient legends; touring an island covered in polar bears, twin craters in Greece, peeking at a supervolcano hidden under Yellowstone Park and examining an ocean formation that's eerily similar to Atlantis.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

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.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow. Puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

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.

How humans discovered the planets and how they became a complex solar system.

Paid programming.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow. Puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

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.

The Sunshine coast features world famous mountain ranges, forest landscapes and iconic towns.

Archaeologists discover a link between the prophecies of the oracles and seismic activity beneath Earth's surface.

Interviewing ambitious artists about their craftsmanship, including author Stephen King, painter Mark Bradford and more.

Mary Lincoln, Eleanor Roosevelt and Laura Bush's role as First Ladies in calming the nation in times of war.

Archaeologists discover a link between the prophecies of the oracles and seismic activity beneath Earth's surface.

The inside story of the F-4 Phantom, the U.S. military's go-to fighter for more than four decades.

In Philadelphia, Mike Davidson is on streets, in tunnels, on tracks & in trolley restoration garages - working shoulder-to-shoulder with the team that keeps one of America's largest & oldest mass transit systems running smoothly and on time.

Traveling to New York, Denver and Nice, France to visit Little Island, the Denver Museum of Art and La Tête Carrée; the secrets to how they were built is revealed.

Witness amazing buildings, bridges, lifts, and other structures that pushed structural concrete engineering to the edge.

Unraveling centuries of bloodshed and avarice surrounding an unlucky Indian jewel; exploring a car where a Hollywood star met an untimely death; assessing the violent end of an English king's legacy and an ominous Assyrian curse etched in stone.

The world has its focus on the Pyramid of Khufu in Egypt, but nearby on the Giza plateau, other architectural masterpieces stand the test of time.

Witness amazing buildings, bridges, lifts, and other structures that pushed structural concrete engineering to the edge.

Unraveling centuries of bloodshed and avarice surrounding an unlucky Indian jewel; exploring a car where a Hollywood star met an untimely death; assessing the violent end of an English king's legacy and an ominous Assyrian curse etched in stone.

The world has its focus on the Pyramid of Khufu in Egypt, but nearby on the Giza plateau, other architectural masterpieces stand the test of time.

Walking among colossal wonders scattered across the Earth's surface, including an ancient reptile skeleton, a massive head carving in the Alberta badlands, a giant South African footprint and a pentagram etched into a remote peninsula in Kazakhstan.

Witness amazing buildings, bridges, lifts, and other structures that pushed structural concrete engineering to the edge.

Unraveling centuries of bloodshed and avarice surrounding an unlucky Indian jewel; exploring a car where a Hollywood star met an untimely death; assessing the violent end of an English king's legacy and an ominous Assyrian curse etched in stone.

The world has its focus on the Pyramid of Khufu in Egypt, but nearby on the Giza plateau, other architectural masterpieces stand the test of time.

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.

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.

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.

Venus offers a complex story with its thick atmosphere and a substantial amount of matter.

Paid programming.

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.

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.

Exploring offshore islands, inland volcanoes and forgotten World War II defense fortifications north of Powell River.

A 4,000-year-old leather manuscript at the Cairo Museum sheds new light on The Book of the Dead from ancient Egypt.

Artists who shine outside the spotlight; a 12-year-old Alma Deutscher's talent; learning why beloved character actor Stanley Tucci prefers supporting roles; listening to a Grammy-nominated prison choir.

A look at how first ladies have changed their role through activism, brains and toughness.

A 4,000-year-old leather manuscript at the Cairo Museum sheds new light on The Book of the Dead from ancient Egypt.

The inside story of the ultimate stealth fighter, the F-22 Raptor, and its predecessors.

Witness amazing buildings, bridges, lifts, and other structures that pushed structural concrete engineering to the edge.

The world has its focus on the Pyramid of Khufu in Egypt, but nearby on the Giza plateau, other architectural masterpieces stand the test of time.

Builders work to make the Draken stronger and sturdier after its failed first voyage; eager volunteers rush to finish before it's too late to set sail; the vital but forgotten role played by Viking women.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow; puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

The Red Pyramid at Dahshur is a revolutionary megastructure and the first true pyramid ever constructed in ancient Egypt; experts investigate to reveal the pharaoh who built it and the mystery behind it's trailblazing design.

Builders work to make the Draken stronger and sturdier after its failed first voyage; eager volunteers rush to finish before it's too late to set sail; the vital but forgotten role played by Viking women.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow; puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

The Red Pyramid at Dahshur is a revolutionary megastructure and the first true pyramid ever constructed in ancient Egypt; experts investigate to reveal the pharaoh who built it and the mystery behind it's trailblazing design.

The hunt for the missing flag draped over USA goalie after the hockey team won Olympic gold in 1980.

Builders work to make the Draken stronger and sturdier after its failed first voyage; eager volunteers rush to finish before it's too late to set sail; the vital but forgotten role played by Viking women.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow; puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

The Red Pyramid at Dahshur is a revolutionary megastructure and the first true pyramid ever constructed in ancient Egypt; experts investigate to reveal the pharaoh who built it and the mystery behind it's trailblazing design.

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.

The view from above reveals baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; a perplexing collection of circles decorating the seabed.

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.

BC's inland waterways.

The view from above reveals baffling behavior from one of the ocean's fastest fish; whales with a strange, aquatic accessorizing habit; a confounding congregation of sharks down under; a perplexing collection of circles decorating the seabed.

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.

BC's inland waterways.

Evidence of ritual murder, human sacrifice and cannibalism in the desert valley of Chaco Canyon, New Mexico.

A look at controversial and provocative artists whose works are meant to push boundaries and influence social justice around the world.

The new masters of the universe refuse to limit their imaginations, exploring space tourism, asteroid mining and colonies on Mars.

Evidence of ritual murder, human sacrifice and cannibalism in the desert valley of Chaco Canyon, New Mexico.

The Vietnam-era OV-10 Bronco is pulled out of retirement to join the fight against ISIS.

Unlock an abandoned site on a remote Antarctic isle and check out mysterious shapes in the Finnish snow; puzzle over an inexplicable monolith in the far reaches of Norway, then get shocked by a blood-red frozen waterfall at the bottom of the world.

The Red Pyramid at Dahshur is a revolutionary megastructure and the first true pyramid ever constructed in ancient Egypt; experts investigate to reveal the pharaoh who built it and the mystery behind it's trailblazing design.

Take a look at some of the escapes that took place during World War II.

The inside story of the Avro Lancaster, the British bomber that was rushed into service to fight back against Nazi Germany.

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.

Take a look at some of the escapes that took place during World War II.

The inside story of the Avro Lancaster, the British bomber that was rushed into service to fight back against Nazi Germany.

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.

The hunt for the football involved in one of sports' greatest plays and a controversial championship ring.

Take a look at some of the escapes that took place during World War II.

The inside story of the Avro Lancaster, the British bomber that was rushed into service to fight back against Nazi Germany.

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.

Earth's closest neighbor, the moon, is the cosmic stepping stone to a future with the planets.

A fleet of spacecraft orbits, and sometimes lands on the surface of, Mars.

Bill Nighy leads a magical journey in the Norfolk Broads along England's holiday river, the River Bure; discovering a watery world where both wildlife and recreation go hand in hand.

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.

Earth's closest neighbor, the moon, is the cosmic stepping stone to a future with the planets.

A fleet of spacecraft orbits, and sometimes lands on the surface of, Mars.

Exploring offshore islands, inland volcanoes and forgotten World War II defense fortifications north of Powell River.

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.

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

The brief but historic service of the Grumman F6F Hellcat and its instrumental role in winning the Pacific War.

The inside story of the F-4 Phantom, the U.S. military's go-to fighter for more than four decades.

The inside story of the ultimate stealth fighter, the F-22 Raptor, and its predecessors.

The Vietnam-era OV-10 Bronco is pulled out of retirement to join the fight against ISIS.

Take a look at some of the escapes that took place during World War II.

The inside story of the Avro Lancaster, the British bomber that was rushed into service to fight back against Nazi Germany.