Petra, located in Jordan, is an ancient city often called the "Rose City" due to the pinkish hue of its sandstone cliffs. It was established by the Nabataeans around the 4th century BCE and became a significant hub for trade and culture. The most famous structure, Al-Khazneh (The Treasury), is intricately carved into the rock and showcases the incredible craftsmanship of the time. Hidden for centuries, Petra was rediscovered in 1812 and is now a UNESCO World Heritage Site, attracting visitors from around the globe for its breathtaking beauty and historical significance.