"Peruvudaiyar Kovil" is a Hindu temple dedicated to Shiva, also called Rajarajesvaram temple or Peruvudaiyār Kōvil temple. It is located on the south side of Kaveri river in Thanjavur in the Indian state of Tamil Nadu. It is also known as "Periya Kovil", "RajaRajeswara Temple" and "Rajarajeswaram". It is one of the largest temples in India. Peruvudaiyaar Kovil is an example of Tamil architecture from the Chola period. It was built by Tamil King Raja Raja Chola I and completed in 1010 AD. The temple turned 1000 years old in 2010. The temple is part of the UNESCO World Heritage Site known as the "Great Living Chola Temples", along with Brihadeeswarar Temple, Gangaikonda Cholapuram and Airavatesvara temple.