NYC, USA - United Nations Headquarters

NYC, USA - United Nations Headquarters a photo by GlobeTrotter 2000 on Flickr.

The United Nations Organization (UNO) or simply the United Nations (UN) 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. The UN was founded in 1945 after World War II to replace the League of Nations, to stop wars between countries, and to provide a platform for dialogue. It contains multiple subsidiary organizations to carry out its missions.

The headquarters of the United Nations is a distinctive complex in New York City, United States, that has served as the official headquarters of the United Nations since its completion in 1952. It is located in the Turtle Bay neighborhood of Manhattan, on spacious grounds overlooking the East River. 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.Turtle Bay is used as a synonym for the U.N. headquarters or for the U.N. as a whole.

Though it is in New York City, and part of the United States, the land used by the United Nations Headquarters is considered international territory, while also being subject to most local, state, and federal laws. For award purposes Amateur radio operators consider it a separate "entity", and for communications the UN has its own internationally recognized ITU prefix, 4U.