Image of the dome and minaret of Sultan Salahuddin Abdul Aziz Shah Mosque, Shah Alam, Selangor, Malaysia. This is Malaysia's largest mosque and also the second largest mosque in Southeast Asia. Construction began in 1982 and finished in 1988. The Mosque is also known as the Blue Mosque owing to its blue dome. The building has the distinction of having the largest religious dome in the world, it measures 51.2 m (167 ft) in diameter and reaches 106.7 m (350 ft) above ground level. The four minarets, each reaching 142.3 m (460 ft) above ground level are the 2nd tallest in the world.