The Imam Reza shrine in Mashhad, Iran is a complex which contains the mausoleum of Imam Reza, the eighth Imam of Twelve imams of Shiites. It is the largest mosque in the world by area. The complex is one of the tourism centers in Iran. The shrine itself covers an area of 267,079 m2 while the seven courtyards which surround it cover an area of 331,578m2 - totaling 598,657 m2 (6,443,890 sq...