The document discusses Umayyad desert palaces built between the 8th and early 9th centuries in Syria, Jordan and Lebanon. It describes several palaces such as Qasr al-Hayr al-Gharbi, Qasr al-Hayr al-Sharqi, Qasr Kharana, Qusayr 'Amra, Khirbat al-Mafjar and Mshatta. The palaces featured square walled enclosures with corner towers and were used for hunting parties and official functions. They show influences from Byzantine and Sasanian architecture with vaulting, mosaics and frescoes depicting rulers and court scenes. The palaces exemplified the wealth and power