Permanent representative to the United Nations Permanent representative to the United Nations A permanent representative (sometimes called a "UN ambassador") is the head of a diplomatic mission to the United Nations. Of these, the most high-profile UN permanent representatives are those assigned to headquarters in New York City. However, member states also appoint permanent representatives to the other UN offices in Geneva, Vienna, and Nairobi. Many countries, including the United States, call their UN permanent representative "UN ambassadors". Although a permanent representative holds the equivalent diplomatic rank of an ambassador (or chief of mission or high commissioner), he or she is accredited to an international organisation,
Headquarters of the United Nations UN Plaza) are also part of headquarters. In addition, the Church Center for the United Nations (777 UN Plaza) is a private building owned by the United Methodist Church as an interfaith space housing the offices of several non-governmental organizations. The Office of Internal Oversight Services (OIOS) is located at 380 Madison Avenue. In October 2011 city and state officials announced an agreement in which the UN would be allowed to build a long-sought new office tower adjacent to the existing campus on the current Robert Moses Playground, which would be relocated. In exchange, the United Nations would allow the