Qsar al-Hallabat is located in Jordan’s eastern desert. The complex was originally a Roman fortress constructed in the 3rd century CE to protect from attacks by Bedouin tribes. The site lies on the Via Nova Traiana, which connected Damascus to Aila. The complex was destroyed by the Umayyad caliph in the 8th century. On the plan of the castle, the caliph built a larger castle which incorporated a mosque, a complicated water system and a bathhouse. The palace is constructed in black basalt and highly decorated with mosaics and inlay. The site currently needs restoration.