Petra is an ancient city in southern Jordan, famous for its stunning rock-cut architecture carved directly into rose-red sandstone cliffs, earning it the nickname "Rose City". Once a thriving trade hub for the Nabataean kingdom, it features iconic structures like Al-Khazneh (the Treasury) and Ad Deir (the Monastery). Now a UNESCO World Heritage Site and one of the New Seven Wonders of the World, Petra is Jordan's most popular tourist attraction, showcasing incredible engineering and artistic skill.