Kalkulam is a historically monumental town, revenue division, and administrative taluk located in the Kanyakumari district of Tamil Nadu. Headquartered at the bustling commercial town of Thuckalay, Kalkulam is widely regarded as the cradle of the old Travancore Kingdom.
​While it is an integral part of Tamil Nadu today, its ancient stone forts, royal palaces, and political history are deeply intertwined with the royal lineages of Kerala, representing a unique cultural synthesis of both states.