Karaikal is one of the municipal district in the Union territory, Puducherry.
It houses the Thirumalairayanpattinam, Thirunallar, Nedungadu, Kottucherry, Navy and Varichikudy.
The sea of this city holds Virasolanar river, Tirumalairajanar, Vikramanar river, Arasalar river and its tributaries.
The land here is rich in Alluvium, which makes the soil more fertile.
The town makes Nagapattinam the only district to divide into two parts.
It has pride in giving birth to Karaikal Ammaiyar, one of the sixty-three nayanmars of Tamil history.