The headquarters

Headquarters

Headquarters denotes the location where most, if not all, of the important functions of an organization are coordinated. In the United States, the corporate headquarters represents the entity at the center or the top of a corporation taking full responsibility managing all business activities...

 of the United Nations is a complex in New York City

New York City

New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

. The complex has served as the official headquarters of the United Nations

United Nations

The United Nations is an international organization whose stated aims are facilitating cooperation in international law, international security, economic development, social progress, human rights, and achievement of world peace...

 since its completion in 1952. It is located in the Turtle Bay

Turtle Bay, Manhattan

Turtle Bay is a neighborhood in New York City, on the east side of Midtown Manhattan. It extends between 41st and 54th Streets, and eastward from Lexington Avenue to the East River, across from Roosevelt Island...

 neighborhood of Manhattan

Manhattan

Manhattan is the oldest and the most densely populated of the five boroughs of New York City. Located primarily on the island of Manhattan at the mouth of the Hudson River, the boundaries of the borough are identical to those of New York County, an original county of the state of New York...

, on spacious grounds overlooking the East River

East River

The East River is a tidal strait in New York City. It connects Upper New York Bay on its south end to Long Island Sound on its north end. It separates Long Island from the island of Manhattan and the Bronx on the North American mainland...

. Its borders are First Avenue

First Avenue (Manhattan)

First Avenue is a north-south thoroughfare on the East Side of the New York City borough of Manhattan, running from Houston Street northbound for over 125 blocks before terminating at the Willis Avenue Bridge into The Bronx at the Harlem River near East 127th Street. South of Houston Street, the...

 on the west, East 42nd Street

42nd Street (Manhattan)

42nd Street is a major crosstown street in the New York City borough of Manhattan, known for its theaters, especially near the intersection with Broadway at Times Square. It is also the name of the region of the theater district near that intersection...

 to the south, East 48th Street on the north and the East River to the east. Turtle Bay is occasionally used as a metonym for the U.N.