The historical site of Petra is located in Jordan, specifically in the Ma'an Governorate. Renowned for its rock-cut architecture and water conduit system, Petra was once a thriving trade center in ancient Nabataea. Its most famous structure is the Al-Khazneh or "The Treasury," which attracts thousands of tourists each year. This UNESCO World Heritage Site is often called the "Rose City" due to the color of the stone from which it is carved.