Sri Kasi Vishwanathar Temple is located in the north-eastern side of the Mahamaham tank, Kumbakonam in Thanjavur District. The deities of the temple are Lord Kaayarohanar and Goddess Vishalakshi. The temple contains many artistic works including the attractive sculptures. Belief is that Lord Ram on his way to Lanka came here and worshipped Lord Kasi Viswanatha. The temple has the statues of Nava Kannikas (Navakannigas), nine virgins namely Ganga, Yamuna, Godavari, Narmada, Saraswati, Kaveri, Kumari, Payoshni and Sarayu. The main festivals are Aadipuram (Aashada) and Maasimaham.