The ancient city of Petra is located in Jordan. This UNESCO World Heritage Site is renowned for its rock-cut architecture and water conduit system. Petra was once the center of trade routes and flourished as a significant city of the Nabataean Kingdom from the 4th century BC until its decline in the 2nd century AD. Notable structures include the famous Treasury (Al-Khazneh) and the Monastery (Ad Deir), both carved directly into the rose-red cliffs. Petra attracts countless tourists interested in its historical significance and breathtaking views, showcasing ancient engineering skills.