The historical landmark of Petra is located in Jordan. This ancient city, carved into red sandstone cliffs, is a UNESCO World Heritage Site and dates back to the 5th century BC. Petra served as a vital trade hub for the silk road and is famous for its stunning architecture, including the Al-Khazneh (the Treasury) and the Monastery. The site's advanced water conduit system showcases the ingenuity of the Nabateans, who inhabited Petra. Today, it stands as a testament to the region's rich historical and cultural heritage.