Also known as the Alabaster Mosque, this is an outstanding example of 19th-century Islamic architecture, with a huge Ottoman-style dome and two slender minarets. (Most of the architecture was copied from the Blue Mosque in Istanbul.) It also contains the gilt tomb of Pasha Muhammad Ali. The mosque is aesthetically controversial; its squat, heavy shape has been compared to that of a toad. But it does afford good views of the city and, on a clear day, the pyramids in Giza. Daily 9 am-4 pm. Admission is included in the Citadel entrance fee. In the Citadel complex (Islamic Cairo), Cairo.