Port Blair (pronunciation ) is the capital city of the Andaman and Nicobar Islands, a union territory of India in the Bay of Bengal. It is also the local administrative sub-division (tehsil) of the islands, the headquarters for the district of South Andaman and is the territory's only notified town. Port Blair serves as the entry point for visiting the Andaman and Nicobar Islands. Port Blair is connected with mainland India by both air and sea. It is a two to three-hour flight from mainland India to Port Blair's Veer Savarkar International Airport, and three to four days by sea to reach Kolkata, Chennai, or Visakhapatnam from Haddo Wharf in Port Blair. 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, Andaman and Nicobar Police, Andaman and Nicobar Command, the first integrated tri-command of the Indian Armed Forces and the Indian Air Force.Port Blair is also famous for the historic Cellular Jail and other small islands like Corbyn's Cove, Wandoor, Ross Island, Viper Island and so forth, which were once home to British colonists. Port Blair has been selected as one of the cities to be developed as a smart city under the Smart Cities Mission.