Quseir Amra

Qusayr 'Amra or Quseir Amra, lit. "small qasr of 'Amra", sometimes also named Qasr Amra, is the best-known of the desert castles located in present-day eastern Jordan. It was built some time between 723 and 743, by Walid Ibn Yazid, the future Umayyad caliph Walid II, whose dominance of the region was rising at the time. It is considered one of the most important examples of early Islamic art and architecture.

The building is actually the remnant of a larger complex that included an actual castle, meant as a royal retreat, without any military function, of which only the foundation remains. What stands today is a small country cabin.

Source: Wikipedia