Qasr al-Hallabat is an Umayyad desert castle located in Jordan's eastern desert. Originally a Roman structure, it was later transformed into a grand Umayyad complex by Caliph Hisham ibn Abd al-Malik in the 8th century. The site includes a mosque, water system, bathhouse, and agricultural structures. The main palace boasts decorative mosaics, frescoes, and stucco carvings, showcasing intricate craftsmanship. Today, the nearby modern town of Qasr Al-Hallabat is home to the Bani Sakhr tribe, particularly the Al-Othman family.