As carrier groups deliver destruction to Japanese strongholds, American subs risk everything to surface in enemy waters and rescue downed aviators.

The pyramids of Giza could be a giant map of the stars; how first responders brought hope to the survivors of Hurricane Katrina; an Indonesian volcano burns a shade of blue; a bird's eye view reveals the forgotten pleasures of America's recent past.

Crews work around the clock to build the world's largest underwater concrete bed to salvage the Costa Concordia; operating in secrecy, teams work under high security to repair one of the world's most iconic cruise liners.

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.

Journey along the Manitoba-United States border's wide-open frontier with incredible landscapes and stories of human migration.

Lunar and solar eclipses.

An exploration of the astrophysics of stars creating matter.

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.

Escaping on traditional boats for a voyage through the green heart of southwest France; drinking wine and hunting for truffles with those who live, work and play in the handsome towns of the Dordogne.

Journey along the Manitoba-United States border's wide-open frontier with incredible landscapes and stories of human migration.

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.

The story of the world's first nuclear bomber, the B-29, and its explosive impact on aerial warfare.

The overlooked underdog of British fighter planes; fast and versatile, the dogfighter doubled as a bomber and ground support aircraft in every theatre of WWII.

Considered the deadliest fighter of WWII, Germany's Me-109s were feared by Allied bombers and fighters alike; 109s fought Spitfires in the Battle of Britain and alongside Rommel in North Africa.

The most-produced bomber in US history, used during World War II by every branch of the American military, as well as by the Royal Air Force.

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.

Documentary series that tells the story of the evolution of maritime conflict.

[EPG Series] A look at how technological advances over the centuries have led to bigger and faster combat ships and transformed maritime warfare.

Examining some of maritime history's most effective lightning strikes; how the French frigate Nivôse set a trap to lure Somali pirates; how the HMS Illustrious captured a well-defended Mediterranean harbor in WWII; a surprise attack on Tokyo in 1942.

In April 1945, the Yamato, the largest battleship in history, left for Okinawa to destroy American warships and prevent their landing; weighing 70,000 tonnes and armed with 150 guns, it faced the U.S.

Mike joins the Assault Craft Unit 5, the U.S. Navy's team for Landing Craft Air Cushions (LCACs); LCACs carry heavy vehicles and troops onto beaches; Mike helps fly & fix an overhauled LCAC during a U.S. Marines beach assault training mission.

A new Olympic and Paralympic museum tests engineers with its trailblazing accessible design. A dazzling curved glass skyscraper battles gravity in Milan. And a student center built under a noisy railroad.

In April 1945, the Yamato, the largest battleship in history, left for Okinawa to destroy American warships and prevent their landing; weighing 70,000 tonnes and armed with 150 guns, it faced the U.S.

Seeing some of the world's biggest and most complicated machines and exploring the dirtiest jobs and the missions of hardhat heroes from across the globe.

An exploration of how some of the world's biggest man-made structures were built.

Archaeologists in Saqqara discover an unfinished tomb dating to Egypt's Old Kingdom and uncover 4,000-year-old secrets about the family it was built for.

The kingdoms of feudal Japan are at war when several powerful warlords fight to become absolute ruler.

Investigating significant historic and contemporary sites from the revealing vantage points of drone, satellite, and aerial photography.

Salvaging a 50-foot motor yacht in Islamorda, Fla.; a 44-foot launch hung up on a dam on the Mississippi River; repairing a major storm gate in the British Isles.

Exploring machines invented for human survival in the extreme cold across the planet.

The clifftop ruins of Tintagel Castle are shrouded in a tumultuous history and believed to be the birthplace of King Arthur; experts use cutting-edge tech to unlock the secrets of this ancient structure and reveal the truth behind a legendary ruler.

A flying tour of the country's most magnificent cultural landmarks.

Following marine salvage teams as they race against the clock to recover ships wrecked by fierce storms that rage across the globe.

A Nazi weapon designed to turn the tides of WWII in Northern France; a secret Russian military tower in the shadow of the Chernobyl disaster; a forgotten Australian tunnel rumored to hide a nuclear lab; something shocking buried under Alcatraz.

Stories of some of the greatest and deadliest submarine patrols of World War II.

Over a hundred massive concrete arrows scattered across America; a giant chalk figure with an oversized phallus on an English hillside; a mysterious hole in the middle of a lake in Southern California.

Stories of some of the greatest and deadliest submarine patrols of World War II.

A Turkish drought reveals a long-lost ancient Basilica and its secrets; a church spire punches through the surface of a toxic sludge in Romania; the hull of a massive ship in the North Sea answers decades old questions.

Stories of some of the greatest and deadliest submarine patrols of World War II.

Nubian pyramids reveal the rise of female power in Ancient Kush; a shocking satellite image uncovers secrets of an ancient ancestral Puebloan site in New Mexico.

Stories of some of the greatest and deadliest submarine patrols of World War II.

Waterton National Park's location makes it one of the best spots on earth to spot wildlife.

Paid programming.

Follows an archaeological team in Cambodia as it uncovers the mysteries of Angkor Wat.

The discovery of a burial shaft filled with priceless gilded coffins provides insights into what happened when Greek rulers took over ancient Egypt.

From the devastatingly bombed streets of London to industrial Chicago to Nazi Berlin, capturing nail-biting criminal investigations to prove that everything is not always what it seems.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

A flying tour of the country's most magnificent cultural landmarks.

The tragic story of Archduke Maximilian and the series of unfortunate circumstances that doomed his reign over Mexico.

Loaded with mind-blowing factoids and stats, entertaining expert interviews, and infographics injected with cheeky humor.

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.

Seeing some of the world's biggest and most complicated machines and exploring the dirtiest jobs and the missions of hardhat heroes from across the globe.

In April 1945, the Yamato, the largest battleship in history, left for Okinawa to destroy American warships and prevent their landing; weighing 70,000 tonnes and armed with 150 guns, it faced the U.S.

An exploration of how some of the world's biggest man-made structures were built.

Exploring machines invented for human survival in the extreme cold across the planet.

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

Follows an archaeological team in Cambodia as it uncovers the mysteries of Angkor Wat.

The discovery of a burial shaft filled with priceless gilded coffins provides insights into what happened when Greek rulers took over ancient Egypt.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

From the devastatingly bombed streets of London to industrial Chicago to Nazi Berlin, capturing nail-biting criminal investigations to prove that everything is not always what it seems.

The inside scoop on six of the wealthiest people in history; revealing how they became crazy rich.

A look at the US military's ultimate flying war machines and the airplanes used by American forces through the years as pilots and other team members look back on their experiences.

Nazi diehard and fanatics fight to the last man to stop Allied forces from freeing Europe, keeping an unrelenting grip on the naval bases, citadels and fortresses of occupied Europe.

Mike pushes himself to the limit to work with an elite team of high ropes techs on fixes hundreds of feet in the air. Starting 45 stories up on the side of a skyscraper, then working and dangling on the edge.

Seeing some of the world's biggest and most complicated machines and exploring the dirtiest jobs and the missions of hardhat heroes from across the globe.

The inside scoop on six of the wealthiest people in history; revealing how they became crazy rich.

A look at the US military's ultimate flying war machines and the airplanes used by American forces through the years as pilots and other team members look back on their experiences.

Nazi diehard and fanatics fight to the last man to stop Allied forces from freeing Europe, keeping an unrelenting grip on the naval bases, citadels and fortresses of occupied Europe.

Mike pushes himself to the limit to work with an elite team of high ropes techs on fixes hundreds of feet in the air. Starting 45 stories up on the side of a skyscraper, then working and dangling on the edge.

Seeing some of the world's biggest and most complicated machines and exploring the dirtiest jobs and the missions of hardhat heroes from across the globe.

The discovery of a burial shaft filled with priceless gilded coffins provides insights into what happened when Greek rulers took over ancient Egypt.

Follows an archaeological team in Cambodia as it uncovers the mysteries of Angkor Wat.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

From the devastatingly bombed streets of London to industrial Chicago to Nazi Berlin, capturing nail-biting criminal investigations to prove that everything is not always what it seems.

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

Exploring machines invented for human survival in the extreme cold across the planet.

A flying tour of the country's most magnificent cultural landmarks.

Strange markings in the remote reaches of Northern Finland; drones find a Manhattan-sized mystery in the depths of a Vietnamese cave; secrets are no longer hidden in the Antarctic; a lost sky-high world in Mozambique gets a visit from above.

Stories of some of the greatest and deadliest submarine patrols of World War II.

Drones reveal what's left of Henry Ford's American suburb in the Brazilian jungle; clues to what killed a once-vibrant Pennsylvania mining town; an aerial glimpse of New York's forgotten ghost town; an Italian Renaissance reduced to dust.

Stories of some of the greatest and deadliest submarine patrols of World War II.

As seen from space, a crater in Turkmenistan, is on fire; drones reveal perfect circles in the Namibian desert; A puzzle is solved by a World War 2 code breaker; Mystery of Death Valley's self-moving stones; Utah's strange electric blue ponds.

Loaded with mind-blowing factoids and stats, entertaining expert interviews, and infographics injected with cheeky humor.

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.

Loaded with mind-blowing factoids and stats, entertaining expert interviews, and infographics injected with cheeky humor.

One of the world's largest polar bear denning sites hosts both tundra and marine environments.

Loaded with mind-blowing factoids and stats, entertaining expert interviews, and infographics injected with cheeky humor.

Paid programming.

A succession dispute inside the Shogunate, the dominant samurai family, has seen central government collapse, kick-starting a period of bloody civil war known as the Sengoku Jidai.

Follows an archaeological team in Cambodia as it uncovers the mysteries of Angkor Wat.

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.

From the devastatingly bombed streets of London to industrial Chicago to Nazi Berlin, capturing nail-biting criminal investigations to prove that everything is not always what it seems.

A look at recent events in the castle, from the fire that started in the Private Chapel in 1992, through to the Queen's 90th birthday in 2016, a year in which she invited the Obamas to visit her "favorite home.".

A flying tour of the country's most magnificent cultural landmarks.

A look at the US military's ultimate flying war machines and the airplanes used by American forces through the years as pilots and other team members look back on their experiences.

Nazi diehard and fanatics fight to the last man to stop Allied forces from freeing Europe, keeping an unrelenting grip on the naval bases, citadels and fortresses of occupied Europe.

Mike pushes himself to the limit to work with an elite team of high ropes techs on fixes hundreds of feet in the air. Starting 45 stories up on the side of a skyscraper, then working and dangling on the edge.

Seeing some of the world's biggest and most complicated machines and exploring the dirtiest jobs and the missions of hardhat heroes from across the globe.

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.

Exploring machines invented for human survival in the extreme cold across the planet.

A succession dispute inside the Shogunate, the dominant samurai family, has seen central government collapse, kick-starting a period of bloody civil war known as the Sengoku Jidai.

Follows an archaeological team in Cambodia as it uncovers the mysteries of Angkor Wat.

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.

Newly uncovered documents reveal a secret Nazi-American plot to rig the 1940 election and ultimately keep the U.S. out of WWII.

Dr. Lindsey Fitzharris explores the mysterious death of Brian Jones, founder of the Rolling Stones.

Investigate one of Egypt's oldest monuments to eternity: the Buried Pyramid of Sekhemkhet; explore a well-preserved underground tomb and view a mysterious sarcophagus during the first-ever on-camera exploration of this 4,500-year-old sacred place.

Newly uncovered documents reveal a secret Nazi-American plot to rig the 1940 election and ultimately keep the U.S. out of WWII.

Dr. Lindsey Fitzharris explores the mysterious death of Brian Jones, founder of the Rolling Stones.

Investigate one of Egypt's oldest monuments to eternity: the Buried Pyramid of Sekhemkhet; explore a well-preserved underground tomb and view a mysterious sarcophagus during the first-ever on-camera exploration of this 4,500-year-old sacred place.

A succession dispute inside the Shogunate, the dominant samurai family, has seen central government collapse, kick-starting a period of bloody civil war known as the Sengoku Jidai.

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.

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.

A flying tour of the country's most magnificent cultural landmarks.

The pyramids of Giza could be a giant map of the stars; how first responders brought hope to the survivors of Hurricane Katrina; an Indonesian volcano burns a shade of blue; a bird's eye view reveals the forgotten pleasures of America's recent past.

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; A giant, unusual pattern is discovered in the Nevada desert.

An underwater discovery from a violent past; strange open ocean spirals off the coast of Australia; a mysterious concrete ghost island; never-seen-before tracks discovered along the seabed.

Visitors to Nahanni National Park can see striking waterfalls, mountain peaks and canyons.

Paid programming.

Reveal the truth behind the planet's oldest legends. Tour an island covered in polar bears, see bizarre twin craters in Greece, peek at a supervolcano hidden under Yellowstone Park, and examine an ocean formation that's eerily similar to Atlantis.

Nobunaga seized the capital city of Kyoto and installed a puppet Shogun, but many powerful and dangerous opponents stand firmly opposed to Nobunaga's fledgling rule.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

Windsor was the safe haven that kept Princess Elizabeth and her sister Margaret safe during the war, and it is where Elizabeth fell in love with Prince Philip.

An inside look at the Panavia Tornado's evolution from a Cold War low-level bomber to a high-level fighter-interceptor.

Dr. Lindsey Fitzharris explores the mysterious death of Brian Jones, founder of the Rolling Stones.

Investigate one of Egypt's oldest monuments to eternity: the Buried Pyramid of Sekhemkhet; explore a well-preserved underground tomb and view a mysterious sarcophagus during the first-ever on-camera exploration of this 4,500-year-old sacred place.

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.

Nobunaga seized the capital city of Kyoto and installed a puppet Shogun, but many powerful and dangerous opponents stand firmly opposed to Nobunaga's fledgling rule.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

A 1.2 million square foot office building balances precariously on a 39 foot wide base in Chicago. A building named Pterodactyl lands on top of a Los Angeles parking garage. And the world's longest suspension footbridge.

Archaeologists unearth a sacrificial skull, investigate a mummy, and crawl through underground tunnels as they embark on new digs in Pompeii.

Archaeologists find traces of a sea-battle that transformed Ancient Rome; archaeologists investigate how Rome rose to dominate the ancient world.

A 1.2 million square foot office building balances precariously on a 39 foot wide base in Chicago. A building named Pterodactyl lands on top of a Los Angeles parking garage. And the world's longest suspension footbridge.

Archaeologists unearth a sacrificial skull, investigate a mummy, and crawl through underground tunnels as they embark on new digs in Pompeii.

Archaeologists find traces of a sea-battle that transformed Ancient Rome; archaeologists investigate how Rome rose to dominate the ancient world.

Nobunaga seized the capital city of Kyoto and installed a puppet Shogun, but many powerful and dangerous opponents stand firmly opposed to Nobunaga's fledgling rule.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

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.

America's most remarkable natural wonders are explored including the Grand Canyon, the Great Lakes and more.

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.

Traipsing along ancient pathways criss-crossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

The scattered terrain of St. Lawrence Islands.

Paid programming.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

Nobunaga's banner flies over Japan, including the capital Kyoto.

An analysis of the secrets of long-lost human settlements, a mysterious Norwegian mound, pre-historic stone circle on the banks of the Tagus River, lost city in the cradle of civilization and more.

As the family made Windsor their home, Philip grew restless; Elizabeth assigned him as ranger of Windsor Great Park, but that only led to more problems.

The history of the F-111 and how the fighter-bomber no one wanted went on to dominate both air and battlefields in the late 20th century.

Archaeologists unearth a sacrificial skull, investigate a mummy, and crawl through underground tunnels as they embark on new digs in Pompeii.

Archaeologists find traces of a sea-battle that transformed Ancient Rome; archaeologists investigate how Rome rose to dominate the ancient world.

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.

Nobunaga's banner flies over Japan, including the capital Kyoto.

An analysis of the secrets of long-lost human settlements, a mysterious Norwegian mound, pre-historic stone circle on the banks of the Tagus River, lost city in the cradle of civilization and more.

A jungle hideaway in India, an intrusion into a nuclear base, the haunting remains of a hospital in South Africa, and the scorched remains of a site that housed America's oppressed and witnessed a British attempt to free them.

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

The history of skyscrapers is the history of American cities, technological ingenuity, and a global boom in urbanization; from west to east, from five stories up to one kilometer high, there's nowhere to go but up.

A jungle hideaway in India, an intrusion into a nuclear base, the haunting remains of a hospital in South Africa, and the scorched remains of a site that housed America's oppressed and witnessed a British attempt to free them.

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

The history of skyscrapers is the history of American cities, technological ingenuity, and a global boom in urbanization; from west to east, from five stories up to one kilometer high, there's nowhere to go but up.

Nobunaga's banner flies over Japan, including the capital Kyoto.

An analysis of the secrets of long-lost human settlements, a mysterious Norwegian mound, pre-historic stone circle on the banks of the Tagus River, lost city in the cradle of civilization and more.

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.

An aerial tour over America's Great Plains tracks the prairies, farms, oilfields and wildlife.

An analysis of the secrets of long-lost human settlements, a mysterious Norwegian mound, pre-historic stone circle on the banks of the Tagus River, lost city in the cradle of civilization and more.

A succession dispute inside the Shogunate, the dominant samurai family, has seen central government collapse, kick-starting a period of bloody civil war known as the Sengoku Jidai.

Nobunaga seized the capital city of Kyoto and installed a puppet Shogun, but many powerful and dangerous opponents stand firmly opposed to Nobunaga's fledgling rule.

Nobunaga's banner flies over Japan, including the capital Kyoto.

Following the death of Oda Nobunaga, his most trusted general Toyotomi Hideyoshi has seized power; after years of waiting in the shadows, another of Nobunaga's former generals, master strategist Tokugawa Ieyasu makes a bold move.

Hannibal, a Carthaginian general and statesman, makes a treacherous, thousand-mile march across Europe to attack the Roman Empire; historians reexamine the march using modern-day science.

The early years of Cleopatra's life, during which she survives her upbringing in an incestuous, murderous family and goes on to forge a romantic and political alliance with Julius Caesar.

The story of Cleopatra's fall from grace in Egypt after the death of Julius Caesar; how Cleopatra tried to win the heart of Mark Antony, which turned out to be a fatal decision.

When the lost tomb of King Tut is opened in 1922, it's not only the famous Curse that is unleashed.

Genghis Khan is responsible for over 40 million deaths; 16 million people carry his personal DNA.

6 million African Americans leave the southern states in the Great Migration to seek freedom and opportunity in the north and west.

New discoveries and new science tell the story of how the ancient Mayans built such an incredible society in a tropical rainforest over two thousand years and then vanished.

An analysis of the secrets of long-lost human settlements, a mysterious Norwegian mound, pre-historic stone circle on the banks of the Tagus River, lost city in the cradle of civilization and more.

A great metropolis has been discovered, buried beneath the pastures of the Danube.

Archaeologists unearth a sacrificial skull, investigate a mummy, and crawl through underground tunnels as they embark on new digs in Pompeii.

Archaeologists find traces of a sea-battle that transformed Ancient Rome; archaeologists investigate how Rome rose to dominate the ancient world.

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.

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

After months of fighting in Europe, U.S. troops finally enter Germany; with their sights set on the city of Aachen, the Americans must break through two rows of bunker fortifications to capture the old capital.

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.

A mysterious pyramid built out of Cold War paranoia; a haunted prison; a cluster of structures in the Atlantic; the mystery of a secret structure on a mountain and an industrial compound are revealed.

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 cross-country aerial journey over America's most majestic and unique roadside attractions.

An aerial journey along the shores of Lake Superior, exploring the city of Thunder Bay and the vast, natural wonders of the world's largest freshwater lake.

It's a time for self-reflection, and the competitors look to mirrors for inspiration, creating deeply personal pieces that express how they see themselves.

In a mystery box challenge, each artist crafts a different household item, including a cookie jar, a candelabrum and a sophisticated sippy cup.

A journey down Spain's Guadalquivir River; swimming the cold waters of the high Sierras de Cazorla; paddle boarding down gorges and onto the great plane of Andalusia; passing on through Cordoba and Seville.

Discover the stories of six epic river journeys via the fascinating characters who live and work on and around the water.

An aerial journey along the shores of Lake Superior, exploring the city of Thunder Bay and the vast, natural wonders of the world's largest freshwater lake.

The discovery of a burial shaft filled with priceless gilded coffins provides insights into what happened when Greek rulers took over ancient Egypt.

The coliseums of Rome were brutal theaters of spectacle and death that helped control the sprawling Roman empire; now, archaeologists uncover the engineering secrets behind these majestic structures to reveal the truth behind the ancient Roman world.

The story of the construction of ancient Egypt's first pyramid, built 4,700 years ago to help the Pharaoh Djoser achieve immortality.

Investigating whether the pharaoh who ordered the building of the Great Pyramid of Giza was really the tyrant he was said to be.

Exploring how Pharaoh Snefru shifted the pyramid age into high gear by ordering three massive monuments.

Archaeologists unearth a sacrificial skull, investigate a mummy, and crawl through underground tunnels as they embark on new digs in Pompeii.

Archaeologists find traces of a sea-battle that transformed Ancient Rome; archaeologists investigate how Rome rose to dominate the ancient world.

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

New evidence found in Egyptian sacred sites is revealing secrets about a forgotten succession of powerful female priests.

An inside look at how the world's most eminent structures define national identity and the engineering techniques used to create them.

New discoveries and new science tell the story of how the ancient Mayans built such an incredible society in a tropical rainforest over two thousand years and then vanished.

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

Stumble upon the largest Anglo-Saxon hoard in the wake of an ominous storm, then assess a precious stone's bloody curse. Discover the unforeseen consequences of disturbing an immortal Chinese army and get mesmerized by a divisive Egyptian sculpture.

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

The discovery of a burial shaft filled with priceless gilded coffins provides insights into what happened when Greek rulers took over ancient Egypt.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

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

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

From high above Sault Ste. Marie, exploring the rugged Lake Huron coastline and scenic lakeside communities.

An angry vacuum, a reclusive imp and other colorful creatures come to life as the contestants create original cartoon characters.

The artists are asked to make meaningful pieces about climate change and fill the shop with icebergs, beetles, mushrooms, and more.

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.

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.

From high above Sault Ste. Marie, exploring the rugged Lake Huron coastline and scenic lakeside communities.

An inside look at how the world's most eminent structures define national identity and the engineering techniques used to create them.

The coliseums of Rome were brutal theaters of spectacle and death that helped control the sprawling Roman empire; now, archaeologists uncover the engineering secrets behind these majestic structures to reveal the truth behind the ancient Roman world.

A great metropolis has been discovered, buried beneath the pastures of the Danube.

Exploring the final building phase of the Great Pyramid of Giza and the rituals that took place after a pharaoh dies.

Egyptologists try to determine who built the Sphinx and why by exploring the power struggles between Khufu's sons after the pharaoh's death.

Egyptologists examine ancient sites and relics to determine what brought the age of the pyramids to an end.

Archaeologists unearth a sacrificial skull, investigate a mummy, and crawl through underground tunnels as they embark on new digs in Pompeii.

Archaeologists find traces of a sea-battle that transformed Ancient Rome; archaeologists investigate how Rome rose to dominate the ancient world.

In May 1905, after a year of stalemate in the Russo-Japanese War, Russia's Pacific squadron arrived at the Tsushima Strait.

Mike pushes himself to the limit to work with an elite team of high ropes techs on fixes hundreds of feet in the air. Starting 45 stories up on the side of a skyscraper, then working and dangling on the edge.

Architects and engineers build an eco-friendly convention center on Vancouver's waterfront, a lift bridge in Bordeaux and a cocoon-shaped skyscraper in Tokyo each with unique challenges like marine habitats and massive spans.

In May 1905, after a year of stalemate in the Russo-Japanese War, Russia's Pacific squadron arrived at the Tsushima Strait.

Mike pushes himself to the limit to work with an elite team of high ropes techs on fixes hundreds of feet in the air. Starting 45 stories up on the side of a skyscraper, then working and dangling on the edge.

Architects and engineers build an eco-friendly convention center on Vancouver's waterfront, a lift bridge in Bordeaux and a cocoon-shaped skyscraper in Tokyo each with unique challenges like marine habitats and massive spans.

A succession dispute inside the Shogunate, the dominant samurai family, has seen central government collapse, kick-starting a period of bloody civil war known as the Sengoku Jidai.

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.

An inside look at how the world's most eminent structures define national identity and the engineering techniques used to create them.

Toyotomi Hideyoshi controls all of Japan, but this new peace is problematic; for the samurai - a race bred for combat and military prowess - war must be waged to rise in status and to accrue wealth; Hideyoshi proposes to invade China.

Tokugawa Ieyasu seizes power from Toyotomi Hideyoshi's infant heir, Hideyori, splitting the country in two; once again, Japan has been plunged into a bitter civil war.

Tourists explore the far reaches of northern Canada and gain exclusive access to polar bears on custom-built rovers; the Twin Otter aircraft drops much-needed supplies to isolated villages.

A wind farm depends on the all-terrain abilities of the Hagglund BV206 in Sweden.

A special drone uses cutting-edge technology to fly deep into treacherous, hard-to-reach mountains on dangerous search and rescue missions, and a hi-tech ice machine works tirelessly at a Toronto airport to keep flights running in brutal conditions.

An in-depth look at the life of China's first emperor, Qin Shi Huang, reveals new truths about his controversial rule.

Traces of a Russian hole to hell in the Arctic, a military base in America's wild west, and a strange looming tower are mysterious deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.

In 1972, the Queen celebrated her 25th wedding anniversary; she was photographed with the whole royal clan at Windsor, looking relaxed and happy; twenty years later, three of her four children were divorced and her beloved home had gone up in flames.

An inside look at the P47 Thunderbolt and the critical role it played in both the European and Pacific Theaters of World War II.

In May 1905, after a year of stalemate in the Russo-Japanese War, Russia's Pacific squadron arrived at the Tsushima Strait.

Architects and engineers build an eco-friendly convention center on Vancouver's waterfront, a lift bridge in Bordeaux and a cocoon-shaped skyscraper in Tokyo each with unique challenges like marine habitats and massive spans.

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.

An in-depth look at the life of China's first emperor, Qin Shi Huang, reveals new truths about his controversial rule.

Traces of a Russian hole to hell in the Arctic, a military base in America's wild west, and a strange looming tower are mysterious deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.

In the wake of the Spanish flu, the 1920s became the decade of flappers, jazz, and the speakeasy; for many, it was a time of unprecedented opportunity.

A Japanese American regiment fights through darkened forests, heavy rains and entrenched Nazis to reach a lost U.S. battalion in the Vosges Mountains.

Mike helps fix the vessels that the U.S. Coast Guard use to keep the oceans safe; he replaces key parts of ship engines, removes a large crane from a buoy tender, and fixes a helicopter for a critical exercise.

In the wake of the Spanish flu, the 1920s became the decade of flappers, jazz, and the speakeasy; for many, it was a time of unprecedented opportunity.

A Japanese American regiment fights through darkened forests, heavy rains and entrenched Nazis to reach a lost U.S. battalion in the Vosges Mountains.

Mike helps fix the vessels that the U.S. Coast Guard use to keep the oceans safe; he replaces key parts of ship engines, removes a large crane from a buoy tender, and fixes a helicopter for a critical exercise.

An in-depth look at the life of China's first emperor, Qin Shi Huang, reveals new truths about his controversial rule.

Traces of a Russian hole to hell in the Arctic, a military base in America's wild west, and a strange looming tower are mysterious deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.

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 coast-to-coast tour over America's man-made structures, old and new; the Statue of Liberty and the Golden Gate Bridge.

Exploring machines invented for human survival in the extreme cold across the planet.

Crawling down the Red River, the Amphibex protects those who live along it during the thaw, while the Hercules C-130 J takes to the Arctic skies of the Canadian North; preparing for summer exploratory missions is Swedish built icebreaker Oden.

Military search and rescue efforts in deadly arctic conditions rely on a specialized helicopter with unrivaled power and endurance, and special access reveals how it works; in the Alps, a monster snow blower keeps trains running in dangerous weather.

The Yeti is a custom-made snow-eater that keeps a critical Alaskan airport open for business; experts reveal how cutting-edge engineering and the latest technology keep this machine running in the toughest conditions.

A helicopter made for extreme environments aids US Army rescue efforts in some of the most harsh conditions; a trio of small but capable tugboats moves cargo vessels through the busiest port of Alaska.

An exploration of China's first emperor's mausoleum, highlighted by 8,000 terra-cotta warriors who guard the royal tomb.

A Russian hole to hell in the Arctic; a military base in America's Wild West; a strange, looming tower; the mystery of an abandoned alien Nazi structure and a Soviet monolith are revealed.

Archaeologists use modern technology to determine if the reputation of China's only empress is based on fact.

The inside story of how the AH/MH-6 evolved over the decades to become an irreplacable aircraft for the U.S. Military.

A Japanese American regiment fights through darkened forests, heavy rains and entrenched Nazis to reach a lost U.S. battalion in the Vosges Mountains.

Mike helps fix the vessels that the U.S. Coast Guard use to keep the oceans safe; he replaces key parts of ship engines, removes a large crane from a buoy tender, and fixes a helicopter for a critical exercise.

In California, brave technicians work at extreme heights to keep a tramway safe for tourists; crews race against the clock to replace a corroded rail at the Montreal Metro.

An exploration of China's first emperor's mausoleum, highlighted by 8,000 terra-cotta warriors who guard the royal tomb.