Nagapattinam Collector office located at kadambadi, Nagappattinam. Nagappattinam- karaikkal Road ,The same road Which leads you to pondicherry , chennai cities.
In ancient times, ‘NagaNadu’, ‘Nagappattinam’ referred only to Sri Langa. Buddhist monks in Sri Lanka had close links with this town Nagapattinam. Animangalam Copperplate of Kulothungachola notes that ‘Kasiba Thera’ [Buddhist Monk] Renovated the Buddhist temple in 6th century AD with the the help of Buddhist monks of “Naganadu” This “nagar annam vihar” later came to be known as “Nagananavihar”.