The ancient city of Petra is located in present-day Jordan and is famous for its rock-cut architecture and water conduit system. Established by the Nabataeans around the 5th century BC, it served as a major trading hub, connecting various trade routes across the region. Petra is renowned for its stunning structures, such as the Treasury and the Monastery, which are carved directly into the rose-red cliffs. The site was rediscovered in the early 19th century and is now a UNESCO World Heritage Site, attracting visitors from around the world.