Qasr ‘Uweinid information
Lonely Planet review
This Roman military fort was built in the 3rd century AD to protect the source of Wadi as-Sirhan (now in Saudi Arabia), but was abandoned less than 100 years later. However, it remains as one of the oldest standing desert castles, and is a powerful reminder of the past Roman occupation of the area. Uweinid is only accessible by 4WD, and is located about 15km southwest of Azraq al-Janubi (South Azraq) – look for the turn-off along the road towards Shaumari Wildlife Reserve.