5. Sperry Gyroscope Corporation Headquarters, Lake Success Long Island

The Sperry Gyroscope Corporation Headquarters was constructed in Lake Success, Long Island in 1941 and operated, under government contract, by the Sperry Corporation. Between 1947 and 1952 the United Nations met at the site. The site continued to be used for defense contracting and was owned by Lockheed Martin. In recent years it has been converted into a Northwell Health hospital facility.

The General Assembly considered the location for themselves because it was air conditioned and modern, however it would have cost around one million dollars to reconfigure the space for them. When the Security Council met there in 1947, they discussed disarmament, international control, of atomic energy, and Triestse. At least some of the sessions were open to the public.