Port Blair ( pronunciation ) is the largest town and a municipal council in Andaman district in the Andaman Islands and the capital of the Andaman and Nicobar Islands, a union territory of India. It lies on the east coast of South Andaman Island and is the main entry point to the islands.Port Blair is the headquarters for the Indian district of South Andaman, and the local administrative sub-division (tehsil), which is also called Port Blair. It is the headquarters of the Andaman and Nicobar Command, the first integrated theatre command of the armed forces. It is home to several museums and a major naval base INS Jarawa of the Indian Navy, along with sea and air bases of the Indian Coast Guard and the Indian Air Force. Port Blair is also famous for the historic Cellular Jail and other small islands which were once home to British colonists.