The city of Thebes was the religious centre of Egypt's New Kingdom. How did workers construct the largest religious site in the ancient world?

The statues of Easter Island were built by one of the world's strangest and most isolated civilizations. New evidence reveals why they were constructed.

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.

A mysterious ruined city in Greece is home to the mythical Labyrinth and the Minotaur. Its catastrophic downfall may have inspired the legend of Atlantis.

The Statue of Liberty is the home to dark American mysteries. Now, experts are using the latest science and technology to reveal her secrets.

At an ancient city lost in the Peruvian desert for 5,000 years, experts find signs of strange rituals. Was it the first civilization of the Americas?

When a Viking fortress lost underground for over 1,000 years is discovered, experts investigate its buried treasures. What caused this civilization's demise?

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.

Hidden deep in the Guatemalan jungle is the lost city of Tikal, once home to over 100,000 people. How did this small village rise to become a Maya superpower?

Abu Simbel in Egypt is the largest rock-cut temple in the world, built 3,000 years ago by Pharaoh Ramses II. How was this giant temple constructed and why?

In Mexico, archaeologists uncover a 100-foot tall mud pyramid, marking the site of the capital city of the mysterious Olmec. Who were these people?

A pioneering experiment shows how ancient Egyptians built the giant obelisks of Thebes. New findings suggest how they prompted the downfall of the pharaohs.

The Inca capital of Cusco was supposedly the site of untold gold and riches. New discoveries reveal the secrets behind this mighty empire's fall.

Archaeologists examine what lies beneath China's Forbidden City, exploring the dark secrets of this mysterious mega-palace buried for nearly 600 years.

New finds at Pompeii's last unexplored area reveal the dark secrets of the doomsday event that destroyed it. Recently-unearthed mummies may offer answers.

Egypt's Bent Pyramid is one of the world's most mysterious ancient mega-structures. Was it intended to look so bizarre, or had something gone wrong?

A cutting-edge investigation into the sinking of the Titanic reveals new discoveries that could explain the mysteries of her last moments.