The city of Petra, the capital of the Nabataean Arabs, is one of the most famous archaeological sites in the world. Petra the world wonder is undoubtedly Jordan’s most valuable treasure and greatest tourist attraction, and it is visited by tourists from all over the world. It is not known precisely when Petra was built, but the city began to prosper as the capital of the Nabataean Empire from the 1st century BC, which grew rich through trade in frankincense, myrrh, and spices. Petra was later annexed to the Roman Empire and continued to thrive until a large earthquake in 363 AD destroyed much of the city in the 4th century AD. The earthquake combined with changes in trade routes, eventually led to the downfall of the city which was ultimately abandoned. In 1812 a Swiss explorer named Johannes Burckhardt set out to ‘rediscover’ Petra; he dressed up as an Arab and convinced his Bedouin guide to take him to the lost city, After this, Petra became increasingly known in the West as a fascinating and beautiful ancient city, and it began attracting visitors and continues to do so today. Petra is also known as the rose-red city, a name it gets from the wonderful colour of the rock from which many of the city’s structures were carved.