12 Shiva temples are connected with Mahamaham festival which happens once in 12 years in Kumbakonam. They are:
- Kasi Visanathar Temple,
- Adi Kumbeswarar Temple,
- Someswarar Temple,
- Nageswaraswamy Temple,
- Kalahasteeswarar Temple,
- Gowthameswarar Temple,
- Kodeeswarar Temple,
- Amirthakadeswarar Temple,
- Banapuriswarar Temple,
- Abimukeswarar Temple,
- Kambatta Viswanathar Temple
- Ekambareswarar Temple.