This mosque, which is located within the walls of the Citadel, is the gem of Islamic architecture in Egypt, with its high dome and two elegant minarets. It has also been known as the Citadel Mosque or the Alabaster Mosque. The construction and decoration of this mosque took quite a long time. They were initiated by Muhammad Ali in (1246 H. /1830 A.D), and it was added to by Khedive Abbass I and later by Ismail Pasha in 1863. In (1296 H. /1879 A.D) Tawfik Pasha restored the marble courtyard of the mosque. In 1935 the original great dome was pulled down when some fractures appeared in it, and it was rebuilt.