The Mosque of al-Sultan al-Nasir Muhammad ibn Qalawun is situated inside the Cairo Citadel. This mosque was built by al-Nasir Muhammad in 1318 during his third and longest reign (1309-1340) as the royal mosque of the citadel.
It occupies a rectangular surface area measuring 57 m by 63 m. The ground plan of this mosque consists of a courtyard surrounded by four roofed areas.