Sultan Haji Hassanal Bolkiah Masjid

The Grand Mosque of Cotabato, officially the Sultan Haji Hassanal Bolkiah Mosque, is situated in Cotabato City and is the second largest mosque in the Philippines with the capacity to accommodate 15,000 people. The biggest mosque in the Philippines is the Marawi Grand Mosque in Marawi City which consists of three floors and a basement, and a total floor area of 9,434 square meters and has a capacity to accommodate 20,000 worshipers at any given time. The Bolkiah mosque is located in Barangay Kalanganan II in Cotabato City. It is also the third largest mosque in Southeast Asia after the Istiqlal Mosque of Indonesia and the Marawi Grand Mosque.

Source: Wikipedia