Top View Of Sri Ranganatha Swamy Temple, Srirangam

Srirangam is famous for its Sri Ranganathaswamy Temple, a major pilgrimage destination for Hindus (especially Sri Vaishnavas) and the largest temple complex in India.
According to the UNESCO, Srirangam is considered the biggest functioning Hindu temple in the world, as it covers an area of about 631,000 square metres (6,790,000 sq ft) with a perimeter of 4 km (10,710 ft), Angkor Wat which is also dedicated to Vishnu is even bigger but services do not take place any more in the temple.
Srirangam is one of a few self-manifested shrines (Svayam Vyakta Kshetras) of Vishnu. The temple complex spans 156 acres (0.63 km2). It has seven prakaras (enclosures). These enclosures are formed by tall, thick rampart walls running around the sanctum. There are 21 towers, gopurams, in all prakaras decreasing in height inwards. The temple town lies on an islet formed by the rivers Kaveri and Kollidam.