The Seven Wonders of the World disappeared in ancient times, and seven replacements were found. But that was without counting the ancient Nabataean city of Mada'in Saleh (Madahine-Saleh), also known as Hégra, the country's most impressive and fascinating archaeological site. This sometimes buried city has its place among these marvels, which also include Petra, the other great Nabataean necropolis, with which it has historical links.
Because of its importance, UNESCO has included it on its list of World Heritage Sites, under the name of Al-Hijr archaeological site.
To give you an idea of its location, it is in the east of the country, in the desert, around 200 kilometres from the Red Sea, as the crow flies, in the Al-Ula valley. It consists mainly of several monuments, each quite a distance apart, which you won't be able to cover on foot: Al Diwan, to the north, and to the south, Hegra, which is relatively central to the whole. Further south are the tombs of Al Sanea and Lihyan (Qasr al Farid), and the 18 tombs of Jabal Al Ahmar. To the west of Al Diwan, the mud houses of AlManabhh.
As we shall see, the Al-Ula oasis alone has a lot to offer.