History of the United Nations $8.5 million donation from John D. Rockefeller, Jr. The UN headquarters officially opened on January 9, 1951, although construction was not formally completed until October 9, 1952. Under special agreement with the United States, the UN enjoys certain diplomatic privileges and immunities, but generally the laws of New York City, New York State, and the United States apply. While the principal headquarters of the UN remain in New York City, major agencies base themselves in Geneva, The Hague, Vienna, Nairobi and elsewhere. The basic constitutional makeup of the United Nations has changed little, though vastly increased membership has altered the
Headquarters of the United Nations Norway and was designed by the Norwegian architect Arnstein Arneberg. The oil canvas mural depicting a phoenix rising from its ashes by Norwegian artist Per Krogh hangs at the front of the room. The 39-story Secretariat Building was completed in 1952. It houses offices for the Secretary General, the Under-Secretary-General for Legal Affairs and United Nations Legal Counsel, the Under-Secretary-General for Political Affairs and Office of Disarmament Affairs, and the Department for General Assembly and Conference Management (DGACM). The library was founded with the United Nations in 1946. It was originally called the United Nations Library, later the United Nations