The Pantheon is a 2,000-year-old temple with a dark secret. Today, using cutting-edge archaeological methods and brand-new evidence, experts look beneath the streets of Rome to find out why it was built and how it survived so long.

Experts investigate myths of a secret portal to hell in Hierapolis.

Experts travel inside ancient mounds to investigate the legend of Midas.

Scientists use pioneering technology to discover the foundations of Venice.

The Tower of London is a centuries-old castle shrouded in a grisly past.

A prehistoric structure could reveal mysteries to the Bronze Age.

Experts explore sunken ruins and reveal one of the first great empires.

Experts decode an Egyptian pyramid constructed as if it floats on water.

Deep in the Iraqi desert, the world's only ziggurat towers over the remains of the first civilization ever known in human history; armed with pioneering satellite imagery, experts investigate the dark mysteries behind this massive, ancient structure.

Special access to cutting-edge archaeological investigations reveals the secrets of the long-lost city that was once the world's largest and richest; using new evidence, experts try to discover what Babylon looked like and what caused its downfall.

Experts investigate the mysteries of the Bermuda Triangle using cutting-edge technology; as new discoveries reveal alien phenomena at the bottom of the ocean floor, researchers may finally uncover the truth behind this strange place.

Egypt's Black Pyramid is the strange, crumbling pyramid that collapsed before its pharaoh was ever buried here, and today, it's largely unexplored; special access to a hi-tech archaeological investigation reveals what went so catastrophically wrong.

When the Nazi airship Hindenburg exploded in a giant ball of fire, the world's largest aircraft in history became one of its greatest catastrophes, and now, new technology might finally reveal what caused the fatal crash and if it was an act of sabotage.

New evidence recovered from the site of the World Trade Center's Twin Towers reveals answers to the greatest mysteries of these modern marvels, and using cutting-edge science and technology, experts investigate the science behind why they collapsed.

New discoveries on a strange island in the Mediterranean might offer new clues in the hunt for Atlantis, and using cutting-edge archaeological methods, experts reveal the apocalyptic event that destroyed this long-lost civilization.

New discoveries at the lost city of Jericho offer fresh evidence about the biblical battle that brought its impregnable walls down; using the latest tech, experts might reveal if Joshua and the Israelites really conquered this ancient city and how.

Egypt's ultimate secrets could be hidden underwater, and a cutting-edge archaeological investigation uses hi-tech methods to scan the ocean floor in search of sunken sphinxes, temples, and shipwrecks.

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.

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

America before Columbus was home to some of the greatest engineering marvels on the planet; special access to hi-tech archaeological digs reveals the secrets of ancient America's Seven Wonders as experts investigate their mysterious purposes.

Cutting-edge archaeological methods help experts unearth the dark secrets hidden at seven wonders of ancient Rome; what they find challenges everything we know about this once-mighty empire.

Investigators explore seven ancient pyramids from around the world.

Investigators reveal new evidence behind seven ancient, lost cities.

There's a lost city buried in the Sahara. Evidence reveals it's home to Nefertiti, Tutankhamun, and the forbidden god of an outlawed religion; experts use cutting-edge tech to uncover the secret doomsday that caused this strange place to disappear.

When Pompeii was destroyed by an apocalyptic volcano in 79 AD, another Roman town was destroyed, too; experts use cutting-edge tech to investigate the secrets of Vesuvius's second victim, which is one of the most perfectly preserved Roman towns on earth.

Troy is the legendary lost city at the center of the Trojan War but its existence has never been confirmed; new discoveries and cutting-edge science might prove if this place existed and if the Greeks really conquered it with the infamous Trojan Horse.

Mount Rushmore is one of America's most iconic landmarks, but there are dark mysteries behind its presidential faces; experts use cutting-edge tech and the latest science to reveal what lies beneath the rock and the secret history of its creation.

The Tower of Babel is one of the most famous stories of the Bible, and to find out if it really existed, archaeologists use cutting-edge tech and the latest science to investigate how ancient engineers could have built such an extraordinary megastructure.

The long-lost underground bunker of Adolf Hitler is home to some of the greatest secrets of the Nazi regime, and now, experts use cutting-edge tech to discover new evidence of Hitler's evil vision for global domination.

The Leaning Tower of Pisa is one of the world's most iconic buildings, and it's also the site of an 800-year-old mystery; using cutting-edge tech, experts investigate the archaeological evidence to reveal when it might finally fall over.

The gunfight at Tombstone's OK Corral turned Wyatt Earp into an American folk hero, and to find what really happened here, experts use the newest tech to discover what caused the fatal shootout and what it reveals about the dark secrets of the Wild West.

The Seven Wonders are the engineering marvels built by great minds of long-lost civilizations, but we're not sure if some even existed. New discoveries & cutting-edge archaeological methods might prove what they looked like and why they disappeared.

A strange site called Saqqara is home to Egypt's very first pyramid. Here, experts use cutting-edge tech to reveal why the ancient Egyptians started building pyramids and if the mummified animals found here are evidence of a bizarre religious cult.

Alcatraz is home to secrets that only cutting-edge archaeology can reveal, and using the latest science and the newest tech, experts search for hidden evidence to investigate why so many tried and failed to escape America's toughest jail.

The Roman Empire built Hadrian's Wall to guard its frontiers at the edge of the world; new discoveries reveal who the Romans were trying to keep out with this 72-mile-long megastructure and what it tells us about the ancient people of Iron Age Britain.

Pyramids in the deserts of Sudan are the ruins of a powerful lost civilization that rivaled the pharaohs of ancient Egypt. Using cutting-edge tech and archaeological methods, experts are revealing the secrets behind the mysterious Kingdom of Kush.

The Nazca Lines are mysterious, alien-looking symbols carved into a remote desert more than a thousand years ago, and new discoveries might finally reveal what these strange images mean and if they explain the disappearance of the people who made them.

The Empire State Building is one of the wonders of the modern world, and cutting-edge tech helps experts explore it like never before, revealing the secrets of its construction and the mysteries hidden deep in its foundation.

New discoveries reveal the scandals and secrets of Nero and his lost palace, and using cutting-edge technology, experts might confirm if the infamous emperor burned down Rome so he could build this golden wonder.

The Lighthouse of Alexandria is one of the world's original Seven Wonders, but it could have been home to a mysterious superweapon, and using cutting-edge tech, experts investigate the secrets of this fabled death ray and its long-lost home.

The lost city of Baiae was the Las Vegas of the ancient world -- until a mysterious calamity caused it to sink into the sea. New discoveries reveal the secrets of this sin city that, like Pompeii, some experts believe was destroyed by a supervolcano.

New discoveries might lead investigators to the legendary group of 300 Spartan warriors who died fighting off one million invading Persians, and using cutting-edge tech, experts reconstruct the battlefield to uncover the secrets of their last stand.

The Dead Sea Scrolls are one of the Holy Land's greatest mysteries, but new discoveries might finally reveal the hidden meaning behind the strange texts, and as experts get closer to unmasking their author, they find clues of an ancient apocalypse.

The Iceman is the world's oldest and most perfectly preserved mummy, and brand-new cutting-edge forensic technology is revealing his darkest secrets; these discoveries could change everything we know about the humans who lived 5,000 years ago.

A cutting-edge investigation into the sinking of the Titanic reveals new discoveries that might finally explain the mysteries of her last moments, and experts get closer to a shocking secret: if there was a way to save almost everyone on board.

Egypt's strange Bent Pyramid is one of the world's most mysterious ancient mega-structures, and new discoveries help experts investigate its dark secret: if it was always intended to look so bizarre, or if something went catastrophically wrong.

New discoveries at Pompeii's last unexplored area reveal the dark secrets of the doomsday event that destroyed it. And recently unearthed mummies might help answer Pompeii's most enduring mystery: why it was built on an active volcano.

Archaeologists use cutting-edge technology to discover what lies beneath China's Forbidden City for the first time, revealing the dark secrets of this mysterious mega-palace that have buried for nearly 600 years.

The Inca capital of Cusco was said to be the site of untold gold and riches, and new discoveries at this mysterious site reveal the secrets behind this mighty empire's fall.

A ground-breaking experiment reveals how ancient Egyptians built the giant obelisks of Thebes and new discoveries at this holy site could explain why these mysterious marvels triggered the downfall of the pharaohs and the end of Egypt's golden age.

The discovery of strange giant stone heads in the Mexican jungle leads archaeologists to the lost capital city of the Olmec; new investigations reveal evidence that the secret knowledge of these mysterious people changed life in the Americas forever.

The treasures of Ramses II are found at Abu Simbel, a giant temple carved into a desert cliff over 3,000 years ago, and new discoveries at this marvel reveal the secrets of ancient Egypt's greatest pharaoh.

Deep in the jungle, the lost city of Tikal holds the dark secrets of the Maya, and now, a new investigation uncovers how it grew into a megacity home to 100,000 people, and why it was mysteriously abandoned.

New discoveries at a strange prehistoric site reveal the dark secrets and rituals of the mysterious people who built the world's largest stone circle, three times bigger than Stonehenge, and just as enigmatic.

When a mysterious Viking fortress lost underground for over a thousand years is discovered, experts investigate its buried treasures to reveal what caused the end of this fearsome civilization.

At an ancient city lost in the desert for 5,000 years, experts uncover evidence of human sacrifice and strange rituals, and new discoveries reveal that the people who lived here might have been the first civilization of the Americas.

A mysterious city in ancient Egypt, Thebes, is the home of the Valley of the Kings, Luxor, Karnak, and other grand temples, and new discoveries reveal how they were built and if the god the pharaohs worshiped here helped them rise to power.

The Statue of Liberty is the home to dark American mysteries, and today, experts are using the latest science and technology to reveal her secrets and discover the inspiration for this modern marvel.

A mysterious ruined city in Greece is the home of the mythical Labyrinth and the Minotaur, and its catastrophic downfall might have inspired the legend of Atlantis. New discoveries at this site reveal a truth stranger than fiction.

The mysterious statues of Easter Island, the Moai, were built by one of the world's strangest and most isolated civilizations, the Rapa Nui. Today, new evidence reveals why they were built and what caused Easter Island's sudden downfall.

Attila the Hun was one of history's fiercest warriors, and new evidence reveals if his terror was responsible for the fall of Roman Empire.

Archaeologists exploring the dark secrets of Tutankhamun's tomb find answers to its ancient riddles, showing how his untimely death, his calamitous burial, and an act of God made a minor pharoah the most famous of them all.

Giant pyramids at a strange site in Mexico are revealing the bloody secrets of a mysterious civilization that vanished 1,400 years ago. Little is known about this lost culture, but new discoveries are uncovering shocking evidence of human sacrifice.

New technologies reveal the startling truth behind the largest temple ever built, Angkor Wat; accompany experts as they uncover how this colossal structure was constructed and why one of the largest cities in the world was suddenly abandoned.

Recent forensic findings uncover the astonishing secrets of the world's most iconic monument, the great Sphinx at Giza. Join the extraordinary investigation as it reveals which pharaoh commissioned this colossal statue and why it was never finished.

Unearthed decodes mysteries and combines scientific investigations with CGI animation to reveal the hidden secrets of iconic structures and monuments from around the globe to discover how they were designed, built, used, and in some cases, lost and rediscovered.

A castle in Scotland could be the home of King Arthur's legendary Round Table. Scientists have made a gruesome discovery at this mysterious site: a disfigured skeleton that could reveal the castle's bloody secrets and rewrite the history books.

The lost city of Machu Picchu is one of the greatest mysteries in archaeology. Scientists do not know why this city in the clouds was built, but investigations into secret Inca codes and deformed skeletons might finally reveal its ultimate mystery.

The Terracotta Army is one of China's greatest treasures, but there are still dark secrets surrounding this super-tomb. Newly discovered artifacts reveal the soldiers' supernatural enemy, and human remains point to ancient China's violent origins.

The Egyptian mega-temple at Karnak was once the political powerbase of the ancient pharaohs and the home to strange religious rituals. New discoveries of skeletons tell a story of jealousy, betrayal, and the rise of a new religion that changed Egypt.

The Taj Mahal is one of the world's most beautiful monuments, but new investigations reveal dark secrets. Scientists are uncovering codes that tell a shocking story of power and betrayal, challenging everything we thought we knew about the Taj Mahal.

New evidence uncovers the ancient mysteries behind the iconic Colosseum. Archaeologists uncover the secret lives of the gladiators and make new discoveries that help explain the rise and sudden fall of the Roman Empire.

The ancient city of Petra, a city carved from desert rock, has baffled experts for decades. Now, new technologies resurrect the city and reveal why the spectacular civilization was suddenly abandoned.

Deep in the jungles of Mexico, the lost city of Chichen Itza contains ancient secrets of a mysterious civilization. Follow the scientists working to find how the Chichen Itza was built and how the bloody rite of human sacrifice shaped the city.

New evidence could help solve some of the Great Pyramid’s greatest mysteries. Follow the investigation into how it was built, revealing the truth behind its hidden tombs and deepest secrets.

The Great Wall of China is the biggest man-made structure on the planet -- and one of its biggest mysteries. Follow the scientific mission to reveal the ancient secrets of one of history's greatest empires.

Go inside the Acropolis, an ancient engineering marvel that has stood above Athens for thousands of years. Follow the scientists working to reveal its hidden mysteries: how it was built, what it looked like, and why it's still standing today.

A medieval engineering marvel might be the home to the remains of the Bible's Three Magi, and we follow the scientists and experts who are delving deep into the mysteries of this incredible religious site.

We reveal the centuries-old secrets and mysteries of one of the most remarkable examples of Victorian engineering. Follow the cutting-edge technology that built the Palace of Westminster, and find how it paved the way for the today's skyscrapers.