The most prominent mosque in Oman is the Sultan Qaboos Grand Mosque, opened in 2001. It features five minarets representing the five pillars of Islam, with the main minaret more than 90 metres high. This exceptionally beautiful new mosque, close to the main road between Muscat and Seeb Airport in the Bausher district, can accommodate up to 16,000 worshippers. Built at Sultan Qaboos` personal expense, the Grand Mosque houses a library and centre for the teaching of religious studies.