Vanishing of Flight 19

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 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 might prove if this place existed and if the Greeks really conquered it with the infamous Trojan Horse.

Investigators piece together the true story of Mount Rushmore.

The Tower of Babel is one of the most famous stories of the Bible. 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 structure.

Investigators uncover the true story of Hitler's underground bunker.

Investigators try to figure out why the Tower of Pisa tilts.

The gunfight at Tombstone's OK Corral turned Wyatt Earp into an American folk hero. 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.

Discover Alcatraz's most hidden and dangerous secrets.

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 structure 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.