Kunrathur is located near Chennai, at a distance of about 8km from Pallavaram. It is the birthplace of the poet Sekkizhar who composed the epic work Periya puranam.

Kunrattur is also known as Tirunageswaram. The Nageswarar temple at Tirunageswaram in the Chola kingdom has many an endowment made by Sekkizhar. Shown above, is the Nageswarar temple at Tirunageswaram near Kumbhakonam.   There is a temple in the memory of Sekkizhar at Kunrattur.

Kunrathur is home to the the ancient Kandaswamy temple, revered by the Tiruppugazh hymns of Arunagirinathar.

Kartikai asterism each month is considered sacred here. Skanda sashti in the month of Aippasi and padi utsavam in the month of Vaikasi are the main festivals celebrated here.