The Treasury of Petra is the most photographed structure in the Petra Archaeological Park in Jordan. This incredible facade was carved from red cliffs by the Nabataean people about 2,000 years ago. The Treasury was not a treasury - but a mausoleum for the 1st century AD Nabatean King Aretas IV, later used as a place of worship. But it got its name from the Bedouins who lived in the area in the 19th century and thought the structure holds a hidden treasure.