The ancient structure located in the city of Petra, Jordan, is the Al-Khazneh, commonly known as the Treasury. Carved into the rose-red cliffs, this architectural marvel dates back to the 1st century AD and showcases the impressive skills of the Nabataeans, an ancient Arab people. The Treasury features intricate facades, with a striking Greco-Roman style, thought to reflect the wealth and power of the Nabataean kingdom. Petra was a thriving trading hub, and today, it is a UNESCO World Heritage site, attracting countless visitors who come to marvel at its stunning beauty and historical significance.