The ancient city of Petra is one of Jordan's national treasures and by far its best-known tourist attraction. Located about three hours south of Amman, Petra is the legacy of the Nabataens, an industrious Arabs who settled in southern Jordan more than 2000 years ago. Admired then for its refined culture, massive architecture and ingenious complex of dams and water channel, Petra is now a UNESCO world heritage site that enchants visitors from all corners of the globe.