Petra

Petra, originally called Raqmu by its Nabataean inhabitants, served as the capital of the Nabataean Kingdom and a major center of caravan trade [1][2]. The city is renowned for its rock-cut architecture and sophisticated water conduit systems, which enabled it to thrive as an artificial oasis in the desert [1][2]. Petra is called the "Rose City" due to the color of its sandstone cliffs [1]. It is now one of the New 7 Wonders of the World and a UNESCO World Heritage Site [1].