Imam Ridha Mosque
Main article: Imam Reza Shrine See also: List of largest mosquesToday the Imam Reza shrine in Mashhad occupies a total area of 598,657 m2 (6,443,890 sq ft) – the shrine area occupies 267,079m2 while the seven courtyards which surround it cover an area of 331,578m2. Thus making it the largest mosque in the world, having an area larger than Masjid al-Haram and Masjid al-Nabawi (which have areas of 356,800 m2 and 400,500 m2 respectively).
The courtyards also contain a total of 14 minarets, and 3 fountains. From the courtyards, external hallways named after scholars lead to the inner areas of the mosque. They are referred to as Bast (Sanctuary), since they were meant to be a safeguard for the shrine areas.
The Bast hallways lead towards a total of 21 internal halls (Riwaq) which surround the burial chamber of Ali al-Ridha. Adjacent to the burial chamber is also a mosque dating back to the 10th century known as, Bala-e-Sar mosque.
Read more about this topic: Ali Al-Ridha