One, Two, and Three UN Plaza
Since UNDC began operating, it has provided more than one million square feet of office space and other facilities for the UN and UN-related organizations in New York City.
One UN Plaza, which opened in 1975, is a 39-story mixed-use office and hotel building located at the northwest corner of East 44th Street and First Avenue. It includes approximately 358,000 square feet of office space that is fully occupied by the UN and foreign missions to the UN.
Two UN Plaza, completed in 1983, is a 40-story mixed-use office and hotel building located adjacent to One UN Plaza with apprximately 369,000 square feet of office space that is over 95% occupied by the UN and foreign missions to the UN.
Three UN Plaza, a 15-story building located on the south side of East 44th Street across from One and Two UN Plaza with approximately 205,000 square feet of office space, was first occupied in 1987. Three UN Plaza is leased to UNICEF as its world headquarters.