The Kasi Viswanathar Temple is situated near Mahamaham Tank. This temple is considered to be the 28th in the series of Tevara Stalams in the Chola kingdom located south of the river Kaveri. This temple is associated with the Mahamagam festival which occurs once every 12 years; when 9 revered rivers in India are believed to assemble in the Mahamagam tank.
This is one of the 3 Kayarohana Stalams in Tamilnadu, the other 3 being Kanchikkaronam and Naagaikkaronam. The term Kayarohana stalam is equivalent in meaning to a shrine where all beings become one with Shiva during the great deluge. This temple is known as Kudanthai Karonam.
Legends: Rama and Lakshmana are said to have worshipped Shiva here during their search for Sita, and acquired Rudramsam, to enable them to fight Ravana. Legend has it that the nine sacred rivers of India, prayed to Kasi Viswanathar at Banaras (Varanasi or Kasi) to be absoved of the sins washed away by bathers, and were directed to bathe in the Mahamagam tank and worship Aadhi Kumbheswarar. Viswanathar of Kasi is believed to have manifested himself here.
History: The name Kayarohana is associated with the Lakulisa Pasupata Saiva sect which originated in Gujarat. This sect of saivism is said to have been widespread in Tamilnadu during the days of Mahendravarma Pallavan.
The Temple: This temple with 2 prakarams and a 72 ft high Rajagopuram is situated on the Northern bank of the Mahamagam tank. Images of the 9 river Goddesses are seen in this temple.
Festivals: Four worship srevices are offered each day here. Masi Magam is the most important annual festival celebrated. Other festivals include Arudra Darisanam, Karthikai Deepam, Aadi Pooram and Navaratri.