The city of Chichen Itza contains secrets of a mysterious civilization.

The mysterious tombs and secrets of the Great Pyramid of Giza are explored.

Experts reveal the ancient secrets of one of history's greatest empires.

Experts examine an ancient engineering marvel, the Acropolis at Athens.

Experts delve into a medieval engineering marvel, the Cologne Cathedral.

The mysteries of the remarkable Palace of Westminster are revealed.

New discoveries reveal the dark secrets of King Tutankhamun's tomb.

Archaeologists unearth dark secrets of the lost city of Teotihuacan.

New technology reveals the truth behind the largest temple ever built.

Recent forensic findings uncover the secrets of the Great Sphinx of Giza.

New discoveries reveal the deepest and darkest secrets of Stonehenge.

Scientists make a gruesome discovery at a legendary castle in Scotland.

Scientists investigate Incan codes to reveal the mysteries of Machu Picchu.

Newly discovered artifacts reveal the secrets of China's Terracotta Army.

Archaeologists delve into the ancient religious rituals of Karnak, Egypt.

New investigations reveal the dark secrets of the beautiful Taj Mahal.