Petra in Wadi Musa, home of the Nabataeans, is a complete city carved in a mountain.In the city are various structures, all (except 2) are carved into rock, including Al-Khazneh - known as the Treasury - which has been designated as one of the "New 7 Wonders of the World" by the for-profit New Open World Corporation. Other major sites of interest in Petra include the Monastery, the Roman theater, the Royal Tombs, the High Place of Sacrifice. The ruins of Petra were rediscovered by Swiss explorer Johann Ludwig Burckhardt in 1812. It was inscribed as a UNESCO World Heritage Site in 1985. Umm Qais, a town on the site of the ruined Hellenistic-Roman city
Jerash is famous for its ancient Roman architecture, with colonnaded streets, Corinthian arches, outdoor Roman theaters and the Oval Plaza. Shoubak with its Crusader castle, "Crac de Montreal", marking both the eastern and southern frontier of Crusader expansion.Ajloun has a medieval Crusader castle
Al-Karak contains an important castle from the times of Salah al-Din, known as Al-Karak Castle.The huge rocks are colorful, mostly pink, and the entrance to the ancient city is through a 1.25 km narrow gorge in the mountain--called the Siq.