The Great Mosque of Raqqah (Arabic: الجامع الكبير في الرقة‎) is the oldest mosque in ar-Raqqah, Syria, located at the northern section of the city's heart. It has a rectangular plan (108 meters (354 ft) x 92 meters (302 ft)) with 1.7 meters (5.6 ft) thick mud brick walls fortified with semi-circular towers at the corners. The outer walls of the mosque are constructed of mud bricks supported by solid semi-circular buttress towers. The prayer hall consisted of three arcades supported on cylindrical piers, whilst the other three sides were lined with double arcades.