It is one of the largest functioning Hindu Temples in the world and it was built between the 6th and the 9th centuries by the Azhwar Saints. The temple is consecrated to Lord Vishnu and is the 1st of the 108 Divya Desams or Vishnu Temples in the world. Complex of the temple covers ab area of around 156 acres. It has been built in Dravidian style of architecture and has been glorified by the literature of early Tamil Literature Canon.
Some mesmerizing features in its architecture include 21 surrounding 'gopurams' along with an ornate gateway, which is also the tallest 'gopuram' of India. There is also a royal temple tower in the place, which covers a base area of 32500 sq.ft and has a height of 196 ft. This temple also organizes the annual chariot festival or Tamil Nadu that lasts for 21 days.