The Faisal Mosque romanized: faisal masjid) is the national mosque of Pakistan, located in the capital city, Islamabad.It is the fifth-largest mosque in the world and the largest within South Asia, located on the foothills of Margalla Hills in Islamabad. It is named after the late King Faisal of Saudi Arabia. The mosque features a contemporary design consisting of eight sides of concrete shell and is inspired by the design of a typical Bedouin tent.