The United Nations (UN) headquarters in New York City is located in the Turtle Bay neighborhood of Manhattan. The address is 750 United Nations Plaza, situated between First Avenue on the west, East 42nd Street on the south, East 48th Street on the north, and the East River on the east. This site, covering approximately 17 to 18 acres, is considered international territory belonging to the 193 UN member states. The complex includes four main buildings: the Secretariat, the General Assembly, the Conference Building, and the Dag Hammarskjöld Library. The UN headquarters overlooks the East River and includes 193 flagpoles displaying the flags of all member states in alphabetical order. Though physically in the United States, the land and buildings are under the jurisdiction of the UN rather than local authorities.