The United Nations (UN) is an international organisation which has its headquarters in New York, USA. The headquarters was officially opened on January 9th 1951. The UN was established in October 1945. World War II had just ended and the UN was established to prevent another such conflict.
The headquarters building of the United Nations was designed by Brazilian architect Oscar Niemeyer. Located in the borough of Manhattan, construction began in 1948 and the building was completed in 1952. The site and buildings are extraterritorial under a treaty agreement between the Government of the United States and the United Nations.
The cornerstone of the United Nations Building in New York City, USA was laid in the year 1949 On This Day.
United Nations headquarters