In Search of History

Exploring the lost city of Angkor Wat.

Karnak grows from a small shrine to Amun to a religious complex, maintained by a society of priests.

Hiram Bingham encounters the abandoned ruin of Machu Picchu in 1911.

Delphi was the sacred area where Zeus' two eagles crossed paths; in a cave under the Temple of Apollo, pilgrims enveloped by hallucinogenic smoke asked questions of the priestess.

The Roman city of Ostia, founded in the 4th century B.C. at the mouth of the Tiber, was once a vital harbor town and important port; examining the reasons for the towns demise.

A look at the story of the Nabataeans, a desert people who carved the city of Petra out of the Jordanian mountains some 2,000 years ago.

Unraveling the mystery behind the fierce, saber-wielding monks known as the Knights Templar.

Venice relied on her 200-square- mile lagoon for protection until surrendering to Napoleon in 1797, yet her origins have sunk into the miasma of myth.