Petra was named one of the Seven Wonders of the Modern World in 2007. It is also known as the Rose City. Established possibly as early as 312 BC as the capital city of the Arab Nabataeans, it is a symbol of Jordan, as well as Jordan’s most-visited tourist attraction. The Nabateans were nomadic Arabs who benefited from the proximity of Petra to the regional trade routes, in becoming a major trading hub, enabling them to gather wealth. The Nabateans are also known for their great ability in constructing efficient water collecting methods in the barren deserts and their talent in carving structures into solid rocks. It lies in a basin among the mountains which form the eastern flank of Arabah, the large valley running from the Dead Sea to the Gulf of Aqaba.