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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.

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.

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.

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.

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.

The Valley of the Queens is a vast necropolis concealing some of Egypt's most miraculous tombs and powerful women; now, investigators use cutting-edge tech to explore lost tunnels and uncover the enigmatic secrets behind these ancient pharaohs.

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 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.

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.

Along with Pompeii, the devastating eruption of Mount Vesuvius left another mysterious Roman settlement buried beneath its ashes; experts reveal new evidence of an ancient civilization and history's most infamous disaster.

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 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.

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.

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 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.

Experts explore Hadrian's Villa, the largest Roman palace ever constructed.

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

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.

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.

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 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.

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.

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.

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 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.

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.

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.

Experts investigate secrets behind the ancient Egyptian city of Abydos.

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.

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.

The Avenue of the Sphinxes has now been unearthed in the biggest excavation in Egyptian history; using cutting-edge CGI, investigators reveal the hidden secrets of the sphinxes.

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.

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.

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.

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.

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.

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.

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

Experts use cutting-edge tech to unlock the secrets of Tintagel Castle.

The Dendera Temple is one of the best-preserved temples in all of Egypt; experts decipher its mystifying zodiac images and uncover the ceremonial events that took place at this sacred site, and stunning CGI rebuilds this grand complex in its prime.

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.

Experts explore the origins of kings in the lost city of Kish, Iraq.

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.

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.

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 reveal new evidence behind seven ancient, lost cities.

Experts reveal the mystery behind the decapitated statues of Mount Nemrut.

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.

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.

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.

Experts investigate the truth behind the mythical city of Xanadu.

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.

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.

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

In 373 B.C., the Greek city of Helike vanished; archaeologists believe they've found the ruins of the great lost metropolis; using CGI, experts re-create the city's final moments and reveal its links to the greatest lost land of all -- Atlantis.

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.

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.

Scientists use pioneering technology to discover the foundations of Venice.

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.

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.

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

Nearly a decade after the ancient site of Nimrud was destroyed by terrorists, experts return to salvage the wreckage; archaeologists piece together the remaining ruins to reveal the origins and brutal decline of a lost empire.