A 3hr walk leads to numerous Nabataean monuments - obelisks, fountains, triclinium, tombs... but most importantly to the principal high place of Petra, sited at the top of the hill. It was here, in the open air, that religious ceremonies and sacrifices to the gods took place. Note also the breathtaking view from the summit of the jebel over the lower town and surrounding mountains (the site's natural defences are also apparent).