Date of issue 28 March 2008. The Faisal Mosque in Islamabad is the largest mosque in Pakistan and South Asia and the sixth largest mosque in the world. It was the largest mosque in the world from 1986 to 1993 when overtaken in size by the completion of the Hassan II Mosque in Casablanca, Morocco. Subsequent expansions of the Masjid al-Haram (Grand Mosque) of Mecca and the Al-Masjid al-Nabawi (Prophet's Mosque) in Medina, Saudi Arabia during the 1990s relegated Faisal Mosque to fourth place in terms of size.