The ancient ruins of Petra are located in Jordan. Known as the "Rose City," Petra is famous for its rock-cut architecture and water conduit system. This UNESCO World Heritage Site was the capital of the Nabataean Kingdom and a key trading hub in ancient times. Visitors to Petra can explore its stunning structures, such as the Al-Khazneh (Treasury) and the Sikh (the narrow gorge leading to the Treasury). The site's historical significance and archaeological wonders make it a must-see destination for travelers.