Headquarters of the United Nations However, the UN did reject an unusual "model playground" proposal for that site, instead choosing to construct a play area similar to others found around New York City. The first 450 UN employees started working at the Secretariat Building on August 22, 1950. The United Nations officially moved into the Secretariat Building on January 8, 1951, by which time 3,300 employees occupied the building. At the time, much of the Secretariat Building was still unfinished, and the bulk of the UN's operations still remained at Lake Success. A centralized phone-communications system, was built to facilitate communications within the complex. The
United Nations Office for Project Services United Nations Office for Project Services The United Nations Office for Project Services (UNOPS) is an operational arm of the United Nations, dedicated to implementing projects for the United Nations System, international financial institutions, governments and other partners around the world. The organization's global headquarters is located on the UN City campus in Copenhagen, Denmark. UNOPS implements more than $1 billion worth of peace and security, humanitarian and development projects for its partners every year, operating in more than 80 countries. Its activities have ranged from managing the construction of schools in Afghanistan, to building shelters in Haiti, to procuring