National Geographic Society

The breathtaking city of Petra was a vibrant trading hub that vanished from most maps in the seventh century A.D. It lay beneath a thousand years of dust and debris when, in 1812, a Swiss scholar disguised as a Bedouin trader identified the ruins as the ancient Nabataean capital.

Spread throughout a series of remote desert canyons in southern Jordan, Petra arose more than 2,000 years ago at the crossroads of key caravan trade routes between Arabia, Syria, Palestine, and Egypt. The Nabataeans carved most of the sprawling city's buildings, including temples, tombs, and theaters, directly into the region's towering red sandstone cliffs. Here, a Bedouin walks his camel past Petra's most famous building, Al Khazneh, or the Treasury.