The United Nations Headquarters is a distinctive complex in New York City that has served as the official headquarters of the United Nations since its completion in 1950. It is located in the Turtle Bay neighborhood, on the east side of Midtown Manhattan, on spacious grounds overlooking the East River.
The United Nations has three additional, subsidiary, regional headquarters or headquarter districts. These are located in Geneva (Switzerland), Vienna (Austria), and Nairobi (Kenya). These adjunct offices help represent UN interests, facilitate diplomatic activities, and enjoy certain extraterritorial privileges, but only the main headquarters in New York contains the seats of the principal organs of the UN, including the General Assembly and Security Council.

Though it is in New York City, the land occupied by the United Nations Headquarters is considered international territory, and its borders are First Avenue on the west, East 42nd Street to the south, East 48th Street on the north and the East River to the east.
The United Nations Headquarters complex was constructed in New York City in 1949 and 1950 beside the East River, on 17 acres (69,000 m2) of land purchased from the foremost New York real estate developer of the time, William Zeckendorf. Nelson Rockefeller arranged this purchase, after an initial offer to locate it on the Rockefeller family estate of Kykuit was rejected as being too isolated from Manhattan. The $8.5 million purchase was then funded by his father, John D. Rockefeller, Jr., who donated it to the City. The lead architect for the building was the real estate firm of Wallace Harrison, the personal architectural adviser for the family.

































in Greenwich Village and runs northwards through the heart of Midtown, along the eastern side of Central Park, where it forms the boundary of the Upper East Side and through Harlem, where it terminates at the Harlem River at 142nd Street.




