Uwais al-Qarni Mosque was a Shia mosque in Raqqa, Syria, until it was destroyed by Daesh (ISIS) terrorist group on May 31, 2014.
It contained the shrines of Ammar ibn Yasir and Uwais Qarni, who died in the Battle of Siffin in 657, which took place around 40 km west of Raqqa. It was adjacent to the Bab al-Baghdad, another major landmark in the city.
The original tombs were located in the old cemetery at the edge of the city. In 1988, Syrian President Hafez al Assad and the Supreme Leader of the Islamic Republic of Iran, Ayatollah Khomeini, initiated a project to develop a new mosque around the tombs. The work was completed in 2003.
On March 26, 2014, the mosque was blown up by two powerful explosions and completely destroyed by Daesh (ISIS) terrorist group because it was a Shia structure. More specifically, it was also built over graves and thus served as a shrine.