The U.S. city where the headquarters of the United Nations are located is New York City. The UN headquarters is situated in the Turtle Bay neighborhood of Manhattan, established after World War II to promote international cooperation and peace. The complex includes various buildings, with the General Assembly Hall and the Security Council Chamber being prominent features. Opened in 1945, the UN serves as a platform for discussion and negotiation among member states on global issues such as human rights, development, and security. The location in New York symbolizes the city’s role as a global hub.