name inscribed is a 150x150m square building that was probably the barracks for the palace guard. It had several identical rooms to serve as living quarters, while the commander of the guards had a central room flanked by three connected courtyards. Excavation at the barracks unearthed "a group of particularly luxurious glass vessels", indicating the high living standards enjoyed even by the lower-ranking members of the caliphal court. Farther south, at the southeastern corner of the palace complex, was a public square surrounded by several buildings. Some of these buildings were reception halls used for social gatherings. Other buildings were private residences, probably belonging to people who were not part of the caliph's inner circle. On the west side of the square was a building that included a small mosque facing the barracks. Separate from this palace city and just outside the north gate of al-Rafiqah, there was a 160x130m rectangular building that also had a double enclosure. This may have actually been built earlier than the more monumental complexes further northeast. Stylistically, like the mosque of al-Rafiqah, the palace complex contains decorative features typical of pre-Islamic Syria. These include stucco friezes depicting vine "scrolls", as well as the "use of decoration to emphasize key architectural features". This indicates that the builders were taking inspiration from previous local styles. The resulting style of Abbasid Raqqa is a transition between pre-Islamic styles and later Abbasid ones, such as the architecture of Samarra after it became the new Abbasid capital in 836. Monasteries Further north of Tall Aswad was the Dayr al-Zakkā monastery, which was built on top of the ancient settlement mound now called Tall al-Bī'a. This was the most important monastery in the city and the symbol of Christian Raqqa. A second important monastery was the so-called Monastery of the Columns (dērā d-esṭūnā), also called the Bizūnā monastery. It was somewhere between Raqqa and al-Rafiqah, in the area of al-Muhtariqa. It was burned by the rebels Umar, a former prisoner in Raqqa, and Nasr ibn Shabath, a prominent Bedouin leader, during a violent conflict in 811/2 when Arab auxiliaries were mobilized at Raqqa. However, just a few years later in 818 it was the site of the installation of Patriarch Dionysios I, which indicates that either the monastery was only partly burned down, or that it had already been rebuilt. This monastery was probably replaced later on by the "mosque