Puducherry, formerly known as Pondicherry, is a union territory of India. It was formed out of four exclaves of former French India, namely Pondichery, Karikal, Mahe, and Yanaon. It is named after the largest district, Puducherry. Puducherry lies in the southern part of the Indian Peninsula. The areas of Puducherry district and Karaikal district are bound by the state of Tamil Nadu, while Yanam district and Mahe district are enclosed by the states of Andhra Pradesh and Kerala respectively.