A look at a group of animals that thrive in the tough conditions of the Tibetan Plateau.

Discovering how the key to Paris's revolutionary past is hidden in cobblestones and street design; skipping the Eiffel tower to climb the ugliest skyscraper in Europe instead.

Launching a spacecraft is hard, but U.S. and Soviet disasters show that getting safely back to Earth is even harder; engineers face huge challenges for a safe splashdown.

There is no better way to witness Argentina, and its land of contrasts, than to experience it by air; this soaring tour stretches from one extreme to the next, from vast wetlands to some of the driest places on Earth.

A vehicle the size of a small car spent a year on Mars.

Historical and modern examinations of constellations.

A unique tour of London explores objects with secret histories, including its black cabs, the Marble Arch and the Horse Guards Clock.

A unique tour of Berlin hunts for little-known stories hidden in the city's famous landmarks, obscure sites, and even in the food.

Discovering how the key to Paris's revolutionary past is hidden in cobblestones and street design; skipping the Eiffel tower to climb the ugliest skyscraper in Europe instead.

Studies are currently under way looking for evidence of dark energy in the movement of galaxies.

Paid programming.

The near extinction and rescue of the American bison through the efforts of William Temple Hornaday, a taxidermist at the Smithsonian Institution who headed west to hunt bison for the museum but ended up saving the species instead.

Discovering where to get a Michelin star meal for less than three dollars and learning the amazing history of Hawker Food; touring Singapore with "Toilet Man" to find out how beautiful gardens and obsessively clean toilets made the city rich.

A look at how the Tower closes up for the night, what happens after dark, and a look at a daring 16th century prison break.

The inside story of the massive military transport aircraft, the C-17.

A national snowstorm brings U.S. aviation to a standstill, but Anchorage fights through the storm; USAF aircrews endure the toughest survival training on Alaska's North Slope, and a veteran aircraft flies life-saving cargo.

Abraham Lincoln's final hours and John Wilkes Booth's plot to kill him.

Trouble-shooting in space can be a matter of life and death, from deep-space collisions to deadly chemical leaks; astronauts are forced to innovate to survive.

The near extinction and rescue of the American bison through the efforts of William Temple Hornaday, a taxidermist at the Smithsonian Institution who headed west to hunt bison for the museum but ended up saving the species instead.

Discovering where to get a Michelin star meal for less than three dollars and learning the amazing history of Hawker Food; touring Singapore with "Toilet Man" to find out how beautiful gardens and obsessively clean toilets made the city rich.

With wildfire season ahead, Mike works with an aerial firefighting company as they fix and convert aircraft into firefighting machines, including the transformation of a 1960's C130 plane from aged military aircraft into a stateofthe art waterbomber.

A new performance center with a tent-like glass-and-steel lobby tests engineers in Kansas City; two twisting apartment towers make heads spin in Ontario.

A look at the U.S. clandestine intelligence team of the 1980s called FOG (Field Operations Group) and how it paved the way for today's special ops forces.

With wildfire season ahead, Mike works with an aerial firefighting company as they fix and convert aircraft into firefighting machines, including the transformation of a 1960's C130 plane from aged military aircraft into a stateofthe art waterbomber.

A new performance center with a tent-like glass-and-steel lobby tests engineers in Kansas City; two twisting apartment towers make heads spin in Ontario.

A look at the U.S. clandestine intelligence team of the 1980s called FOG (Field Operations Group) and how it paved the way for today's special ops forces.

The near extinction and rescue of the American bison through the efforts of William Temple Hornaday, a taxidermist at the Smithsonian Institution who headed west to hunt bison for the museum but ended up saving the species instead.

Discovering where to get a Michelin star meal for less than three dollars and learning the amazing history of Hawker Food; touring Singapore with "Toilet Man" to find out how beautiful gardens and obsessively clean toilets made the city rich.

Trouble-shooting in space can be a matter of life and death, from deep-space collisions to deadly chemical leaks; astronauts are forced to innovate to survive.

Las Vegas depends on workers who do truly unique jobs; scuba-diving engineers fine tune the dancing fountains at the Bellagio, while window washers rappel down the glass pyramid of the Luxor; nearby Red Rock Canyon is a Mecca for climbers.

Lunar and solar eclipses.

An exploration of the astrophysics of stars creating matter.

Discovering where to get a Michelin star meal for less than three dollars and learning the amazing history of Hawker Food; touring Singapore with "Toilet Man" to find out how beautiful gardens and obsessively clean toilets made the city rich.

An inexplicable evil torments the young girls of Reverend Samuel Parris' household; like a plague, it swiftly spreads through Salem Village; fearing the influence of the devil, the afflicted make accusations of witchcraft.

An exploration of the science behind the Anthropic Principle.

Paid programming.

The number of accused individuals keeps growing, hinting at a greater conspiracy of witches; the examinations take place in a packed meetinghouse, where suspects face harsh questioning, and a mob of young women shout accusations of witchcraft.

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

Notorious Colombian drug lord Pablo Escobar's regime ended in a hail of bullets; he left behind a private zoo with African hippos; they escaped and are multiplying, wreaking havoc in Colombia.

We examine the life of the Nine Days Queen as the Tower prepares for a ceremony on the anniversary of her execution in 1554.

The story of one of the world's most effective war machines: the Viking longship, seeing how its design evolved from swift war canoe to versatile and feared ship that would change the course of history.

With wildfire season ahead, Mike works with an aerial firefighting company as they fix and convert aircraft into firefighting machines, including the transformation of a 1960's C130 plane from aged military aircraft into a stateofthe art waterbomber.

A new performance center with a tent-like glass-and-steel lobby tests engineers in Kansas City; two twisting apartment towers make heads spin in Ontario.

There's no escaping human error, no matter how good the technology. A look at the tragedies and missteps in the attempt to conquer space - as well as the knowledge gained from these tragedies.

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

Notorious Colombian drug lord Pablo Escobar's regime ended in a hail of bullets; he left behind a private zoo with African hippos; they escaped and are multiplying, wreaking havoc in Colombia.

New discoveries reveal the astonishing role of women in the ancient world; from goddesses to matriarchies to witch trials.

An exploration of Herculaneum, the twin to Pompeii that also got buried during a deadly volcanic eruption; the discovery of an intact skeleton, the first excavated in 25 years, helps investigators piece together the final hours of Herculaneum.

A colossal stone temple on a remote Egyptian island mysteriously bears the names of the most famous leaders of the ancient world; now, experts use cutting-edge tech to investigate why pharaohs and emperors all built monuments at this enigmatic site.

New discoveries reveal the astonishing role of women in the ancient world; from goddesses to matriarchies to witch trials.

An exploration of Herculaneum, the twin to Pompeii that also got buried during a deadly volcanic eruption; the discovery of an intact skeleton, the first excavated in 25 years, helps investigators piece together the final hours of Herculaneum.

A colossal stone temple on a remote Egyptian island mysteriously bears the names of the most famous leaders of the ancient world; now, experts use cutting-edge tech to investigate why pharaohs and emperors all built monuments at this enigmatic site.

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

Notorious Colombian drug lord Pablo Escobar's regime ended in a hail of bullets; he left behind a private zoo with African hippos; they escaped and are multiplying, wreaking havoc in Colombia.

There's no escaping human error, no matter how good the technology. A look at the tragedies and missteps in the attempt to conquer space - as well as the knowledge gained from these tragedies.

In Chicago, visitors head to the 94th floor of the John Hancock Center; one rooftop serves as a training ground for firefighters, while another is an exercise yard for inmates; Jennie and Julia Papilli swim two miles in Lake Michigan at dawn.

Isaac Brock's daring made him a hero, but may also be his flaw.

Charles de Salaberry is forced to rely on cunning tactics.

The Salem witch trials finally begin with the case against Bridget Bishop, who is quickly found guilty and sentenced to death by hanging; her death is not enough to quell the hysteria, and five more women are tried and executed within a month.

Former minister George Burroughs is convicted of being the devil's ringleader; the witch hunt continues throughout the summer but comes to a halt after the afflicted individuals begin to accuse members of the Massachusetts elite.

With her husband wounded, Laura Secord sets out to warn the British of a possible American attack.

Paid programming.

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

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

Maritime archaeologist Mensun Bound and his team search for the ships that sank in the South Atlantic Ocean during the Battle of the Falklands in World War I.

An inside look at gruesome history of the White Tower, the tragic relationship of Henry VIII and Anne Boleyn, and what it's like to work in London's oldest building.

Vessels that operate in secret, unseen by their enemies, from secret missions that helped win World War II to modern stealth ships using strange shapes and technology to avoid spying ears and eyes.

An exploration of Herculaneum, the twin to Pompeii that also got buried during a deadly volcanic eruption; the discovery of an intact skeleton, the first excavated in 25 years, helps investigators piece together the final hours of Herculaneum.

A colossal stone temple on a remote Egyptian island mysteriously bears the names of the most famous leaders of the ancient world; now, experts use cutting-edge tech to investigate why pharaohs and emperors all built monuments at this enigmatic site.

Space travel is fraught with nature's dangers. Lightning nearly scuttles Apollo 12, solar flares threaten the space station, and a cold snap leads to the Challenger disaster.

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

Maritime archaeologist Mensun Bound and his team search for the ships that sank in the South Atlantic Ocean during the Battle of the Falklands in World War I.

Hidden behind the mighty Niagara Falls, there is an extensive labyrinth containing an engineering marvel; the ruins of a once lavish Romanian destination caught in a web of corruption.

The future historian's files reveal how humans removed excess carbon dioxide from the atmosphere to create a greener Earth; studying a mobile carbon-capture device for trucks, an outdoor air filter, terraforming and carbon-eating seaweed farms.

HMS Queen Elizabeth is the largest and most powerful warship ever built for Britain's Royal Navy; a behind-the-scenes look at what makes this supercarrier so unique and an intimate portrait of the dedicated men and women who call her home.

Hidden behind the mighty Niagara Falls, there is an extensive labyrinth containing an engineering marvel; the ruins of a once lavish Romanian destination caught in a web of corruption.

The future historian's files reveal how humans removed excess carbon dioxide from the atmosphere to create a greener Earth; studying a mobile carbon-capture device for trucks, an outdoor air filter, terraforming and carbon-eating seaweed farms.

HMS Queen Elizabeth is the largest and most powerful warship ever built for Britain's Royal Navy; a behind-the-scenes look at what makes this supercarrier so unique and an intimate portrait of the dedicated men and women who call her home.

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

Maritime archaeologist Mensun Bound and his team search for the ships that sank in the South Atlantic Ocean during the Battle of the Falklands in World War I.

Space travel is fraught with nature's dangers. Lightning nearly scuttles Apollo 12, solar flares threaten the space station, and a cold snap leads to the Challenger disaster.

In Seattle, Chief Seattle Days honor the Native American chief who gave the city its name; a tugboat tows timber to a lumberyard; the $4 billion Amazon campus occupies prime office space; Starbucks' headquarters is quartered in the Port of Seattle.

Tecumseh forges an alliance with the British in pursuit of his dream.

John Norton leads Six Nations warriors against the invading Americans.

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.

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.

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

Drifting along this mighty river through a winding three hundred and fifteen miles of New York state's most stunning natural landscapes; before reaching the destination at the iconic Statue of Liberty.

How mammoths became extinct and an investigation to see if they can be brought back to life.

The story of the 16th century warship Mars the Magnificent and the modern-day expedition that found her deep in the Baltic Sea.

A behind-the-scenes look at the meticulous preparations involved in carrying out the Tower's biggest naval event: the Constable's Dues.

Bad design, human error and the enemy sent great ships to tragic ends, like Britain's K13 submarine and HMS Hood, Sweden's 17th century Vasa, and Kublai Khan's fleet, sunk by the original kamikaze.

HMS Queen Elizabeth is the largest and most powerful warship ever built for Britain's Royal Navy; a behind-the-scenes look at what makes this supercarrier so unique and an intimate portrait of the dedicated men and women who call her home.

The future historian's files reveal how humans removed excess carbon dioxide from the atmosphere to create a greener Earth; studying a mobile carbon-capture device for trucks, an outdoor air filter, terraforming and carbon-eating seaweed farms.

The tragedies and missteps in the attempts to conquer space. First moments are the most dangerous. From Sputnik to SpaceX, millions of litres of fuel ignite and sometimes explode.

How mammoths became extinct and an investigation to see if they can be brought back to life.

The story of the 16th century warship Mars the Magnificent and the modern-day expedition that found her deep in the Baltic Sea.

On May 18, 1980, Washington state's Mount St. Helens erupts; revisiting the destructive volcanic event and revealing ten failures that escalated the catastrophe, including ignored warnings, inadequate safety zones and poor rescue planning.

An American submarine crew gets an order: to hunt Japanese ships that are conducting a secret VIP evacuation in the Philippines in June 1945; examining the stealthy, dangerous tactics they used that would set a US Navy record.

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

On May 18, 1980, Washington state's Mount St. Helens erupts; revisiting the destructive volcanic event and revealing ten failures that escalated the catastrophe, including ignored warnings, inadequate safety zones and poor rescue planning.

An American submarine crew gets an order: to hunt Japanese ships that are conducting a secret VIP evacuation in the Philippines in June 1945; examining the stealthy, dangerous tactics they used that would set a US Navy record.

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

How mammoths became extinct and an investigation to see if they can be brought back to life.

The story of the 16th century warship Mars the Magnificent and the modern-day expedition that found her deep in the Baltic Sea.

The tragedies and missteps in the attempts to conquer space. First moments are the most dangerous. From Sputnik to SpaceX, millions of litres of fuel ignite and sometimes explode.

From the bustling port to the neon-lit clubs of Miami Beach, Miami is revealed to be a city that's about much more than sun and surf; Cuban exiles still gather in Domino Park; Liberty Square inspires a movie; a pink flamingo haven.

East coast shipper creates a private fleet to seize American ships.

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.

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.

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.

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.

A luxury American hotel concealing a top-secret facility, a spooky funfair in Bali struck by disaster, and a relic of hope near Jerusalem.

A Pacific island where thousands of marines lost their lives; a deserted Russian fortress; an imperialist structure in Romania that became a hotbed of revolution; a ghost town in Chile.

Remains of an industry town in Ohio; a beautiful Croatian resort bombarded by enemy fire; an otherworldly garden of Eden dreamed up by a British eccentric in Mexico; a Russian mountain refuge, unconquerable and resolute against formidable foes.

An enormous war machine lies stranded in a coastal grave along the beaches of Dagestan, Russia; experts investigate and uncover the ruins of an experimental Soviet vehicle designed to strike fear in Western governments during the Cold War.

Hidden behind the mighty Niagara Falls, there is an extensive labyrinth containing an engineering marvel; the ruins of a once lavish Romanian destination caught in a web of corruption.

A luxurious skyscraper in the center of a bustling Bangkok metropolis is now an eerily derelict ghost tower; experts investigate and uncover a devastating financial crisis entangled in plots of a murder mystery that led to the development's demise.

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.

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.

Zoom in on some otherworldly sights. Spot a giant glacier on the Red Planet, let the milky seas off the coast of Java bathe your vision, ponder a huge hexagon floating above Saturn, and take a spin around a doughnut-shaped lake in Saskatchewan.

Explore strongholds abandoned by their architects. Look at a lost city in the Amazon jungle, see a desert fortress made by humanity's most notorious empire, explore a city of identical castles, and examine a Greek isle's bloody history from the air.

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

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.

Delving into the tragic sacking of the Kingdom of Benin and seeing if its ruins harbor bad luck; evaluating an unlucky Norwegian artist's paintings, an Egyptian portrait with a dark history, and stolen Lydian treasure that carries ancient ill will.

The future historian's files reveal how humans removed excess carbon dioxide from the atmosphere to create a greener Earth; studying a mobile carbon-capture device for trucks, an outdoor air filter, terraforming and carbon-eating seaweed farms.

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 ghost towns, including Pripyat and Hashima Island.

Space suits allowed Neil Armstrong to walk on the moon and will allow explorers to walk on Mars; the evolution of the technology, from the first crude suit that nearly killed early cosmonauts to the "personal habitats" of the Space Station.

San Francisco is famous for its hills, bridges and bay, but it is also known for its gridlock, ferries and wifi-enabled buses transporting tech workers to Silicon Valley; the tech boom reshapes the skyline; lighting engineers climb the Bay Bridge.

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

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

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

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.

Escape with us on a thrilling journey down the river that forged North America … the St. Lawrence. From the grandeur of the Great Lakes to the picturesque 1000 Islands and through the vibrant, historic cities of Montreal and Quebec.

Stories of ghost towns, including Pripyat and Hashima Island.

The U.S. gains information about space borders using unwanted battleship guns; a V2 rocket is developed from the remains of a secret Nazi base.

The history of a stretch of concrete known as Hitler's Bridge; the highest bridge in the world collapses.

Once-great triumphs of marine engineering now left to rust include a ship graveyard in Maryland.

A look at disused structures that used to be at the forefront of the world's power supply, including Budapest's Kelenfold Power Station and New York's Wardenclyffe Tower.

A crumbling hill in the Peak District and dunes in California causes the closure of two roads; a route used by the French Resistance is closed in 2003.

The ancient city of Abydos contains some of the oldest Egyptian tombs and a buried temple linked to a mysterious death cult; now, archaeologists use cutting-edge drone imaging to investigate long-hidden secrets behind the first pharaohs.

Seven wonders of ancient Egypt are home to mysteries still unsolved thousands of years after their construction, and today, investigators use cutting-edge technology and forensic analysis to reveal new secrets of these colossal engineering marvels.

Seven American engineering marvels are among the modern wonders of United States, and now, investigators use hidden records to decode and reveal the mysteries behind these historic American icons.

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

Challenges beset a sculptural new transportation hub for New York's World Trade Center; Amsterdam gains a building inspired by a mountain valley; a new launchpad for space travel prepares for liftoff in the New Mexico desert.

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.

The U.S. gains information about space borders using unwanted battleship guns; a V2 rocket is developed from the remains of a secret Nazi base.

The development of the parachute required huge leaps of faith by pioneering engineers and courageous test jumpers; the untold story of parachutes, from early test jumps during World War I to the massive chutes that land vehicles on Mars.

Taking wing over Los Angeles reveals more than the secrets of Hollywood's back lots; aspiring actors line up in a non-descript warehouse district; the city is home to surfers and skateboarders; a working oil derrick is tucked into Cardiff Tower.

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

TV personality Bobby Berk ("Queer Eye") stops by the shop to challenge the artists to create glass art centerpieces for a dining room table.

Navigating the historic river that forged America, and sailing from West Virginia to Chesapeake Bay; exploring the armory raided by abolitionist John Brown that sparked the Civil War, the nation's capital and Mount Vernon.

The best kept secrets of Nova Scotia.

Nova Scotia's Southern coast.

The five remaining competitors must design a perfume bottle with a sculpted stopper and render it in two sizes.

Paid programming.

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

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

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

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.

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.

Join the hunt for a fabled treasure that could revolutionize our understanding of ancient Egypt: Cleopatra's tomb. Learn why a recently discovered mummified hand from the 18th century could be the key that unlocks the secrets of this hidden chamber.

Egyptian archaeologists discover a vast burial chamber filled with over a hundred coffins.

Archaeologists discover a mysterious 2600-year-old coffin with a remarkable secret.

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

A family-run airline flies emergency supplies to a remote village hit by water pollution; Alaska's biggest cargo airline loads high explosives on a busy runway; Anchorage's elite pilots come to the rescue of a holiday party.

The Amazon rainforest is one of the enduring mysteries of the natural world.

World-famous mammoth expert Dick Mol traces the history of woolly mammoths.

The history of a stretch of concrete known as Hitler's Bridge; the highest bridge in the world collapses.

Today's ejection seats are computer-controlled flying machines that have saved the lives of more than 10,000 pilots; the stories of pilots whose lives have been saved and the inventors who designed and tested new generations of ejection seats.

An exploration of the Cyclades in the Aegean Sea; exploring the tourist hotspots of Mykonos and Santoríni to Náxos and Amorgós.

Challenged to reflect on hurdles they've overcome, the artists forge pieces that push their skills to the limit.

The artists find inspiration in high fashion as they design accessories, including a braided handbag and a pair of socks.

The Eastern Coastline is a living historical record of the battle between the French and English.

A journey along the geological marvel that is the Bay of Fundy coastline.

An aerial view of Cape Breton Island from the Canso Causeway to the Cape Breton Highlands.

The Season 1 champion returns to challenge the artists to concoct a sculpture that captures the heat, energy and emotion of fire.

Paid programming.

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.

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.

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.

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.

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.

Some of the biggest engineering projects that lie in ruins; cities that are empty ghost towns, bridges that were never finished and roads to nowhere; these deserted places are home to many mysteries and untold secrets.

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.

Some of the biggest engineering projects that lie in ruins; cities that are empty ghost towns, bridges that were never finished and roads to nowhere; these deserted places are home to many mysteries and untold secrets.

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.

Some of the biggest engineering projects that lie in ruins; cities that are empty ghost towns, bridges that were never finished and roads to nowhere; these deserted places are home to many mysteries and untold secrets.

Some of the biggest engineering projects that lie in ruins; cities that are empty ghost towns, bridges that were never finished and roads to nowhere; these deserted places are home to many mysteries and untold secrets.

The world's abandoned structures hold new evidence about the lives and deeds of history's greatest heroes and villains and using the latest discoveries at these mysterious sites, experts count down the 10 most significant ones.

On Christmas morning 1944, an Allied merchant ship off the coast of Australia fights off a torpedo attack by a German U-Boat with its deck guns.

Julie Montagu, Viscountess Hinchingbrooke races to get her manor house ready for Christmas and a grand feast for 110 guests.

A visit to candy factories across Britain shows the machinery that goes into making Kit Kats, Christmas confections and chocolate biscuits.

Once-great triumphs of marine engineering now left to rust include a ship graveyard in Maryland.

The jet engine changed civilization forever, making global travel cheaper and faster; the history of jets, as told by the inventors and the pioneers who risked their lives to pilot them to new heights and speeds.

An aerial tour over southern Greece celebrates its landscapes, its ancient and mythical past and the people who call it home.

In the final face-off, the top two contestants fill a gallery space with a show-stopping installation, and one of them takes home the title.

The Grasslands National Park protects the North American mixed grass prairie.

Julie Montagu, Viscountess Hinchingbrooke races to get her manor house ready for Christmas and a grand feast for 110 guests.

On Christmas morning 1944, an Allied merchant ship off the coast of Australia fights off a torpedo attack by a German U-Boat with its deck guns.

Despite being the second smallest park in Canada, Point Pelee bird watching reputation is huge.

Paid programming.

A visit to candy factories across Britain shows the machinery that goes into making Kit Kats, Christmas confections and chocolate biscuits.

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.

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

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

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

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.

Archaeologists reveal how the Colosseum came to symbolize the might of Rome.

Archaeologists investigate the fate of Nero and his buried Golden Palace.

An exploration of Hadrian's Wall, the largest structure built by the Romans; experts examine the Wall, its forts, gatehouses, and garrison town to see how civilization and culture grew.

An exploration of Herculaneum, the twin to Pompeii that also got buried during a deadly volcanic eruption; the discovery of an intact skeleton, the first excavated in 25 years, helps investigators piece together the final hours of Herculaneum.

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

Egyptologists investigate rumors that the discovery of King Tutankhamun's tomb unleashed a deadly curse.

Clive Anderson and Mary-Ann Ochota try to find out why an ancient warrior tribe mysteriously vanished, and uncover an epic tale of Vikings, giants and the Loch Ness Monster.

A look at disused structures that used to be at the forefront of the world's power supply, including Budapest's Kelenfold Power Station and New York's Wardenclyffe Tower.

Seven accomplished artists compete for a once-in-a-lifetime, career-defining exhibit at the Hirshhorn Museum & Sculpture Garden; the artists face their first commission, creating a work that explores and challenges gender norms in modern society.

Capturing from high, the islands Crete, Samos, Chios, Rhodes and the Dodecanese; exploring the distinct culture and unique stories of these islands.

The civilization of the first and finest national park in Canada, is surrounded by untamed wildlife.

The Bruce Peninsula is the largest natural landscape remaining in Southern Ontario.

Northumberland Strait.

The loyalist city of Saint John and international borders beyond, one of the worlds most famous waterways.

The Pacific Rim National Park Reserve is one of Canada's most beautiful and powerful parks.

Paid programming.

The natural wonders of the Gaspe Peninsula.

Dig up an epic find in South Dakota that fuels suspicion and misfortune, then examine an Egyptian boy king's tomb plagued by an ancient curse. Study a haunted English painting and ponder a relic coveted by a king that may have doomed his reign.

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.

Unearthing a doomed ice age discovery in Russia's Arctic; unveiling a Dutch painting that spells misfortune; digging up a king's unlikely final resting place in an English marsh.

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.

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.

Uncovers the origins of the curses surrounding the Fabergé eggs, the Unlucky Mummy and more in a historical journey from revolutionary Russia to Ancient Egypt.

Delving into the tragic sacking of the Kingdom of Benin and seeing if its ruins harbor bad luck; evaluating an unlucky Norwegian artist's paintings, an Egyptian portrait with a dark history, and stolen Lydian treasure that carries ancient ill will.

Challenges beset a sculptural new transportation hub for New York's World Trade Center; Amsterdam gains a building inspired by a mountain valley; a new launchpad for space travel prepares for liftoff in the New Mexico desert.