The United Nations system includes a large number of intergovernmental organizations, specialized agencies, programmes, funds, offices and research institutes as well as related organizations. Two thirds of the activities of the United Nations system take place in Geneva, making it a key centre of international co-operation and multilateral negotiation. This is one of the reasons that the city is often referred to as "International Geneva".
Around 8,500 staff work for the United Nations family in Geneva, which is the largest concentration of United Nations personnel in the world. They are active in many of the major fields of work of the United Nations, including health; labour; intellectual property; human rights; humanitarian action and disaster relief; economic, trade and development activities; disarmament efforts; science and technology; as well as research and training.
Link to the website of the United Nations Office at Geneva (UNOG)
Since the early 1990s, the UN’s African headquarters in Nairobi has seen sustained growth, both as the global headquarters of the United Nations Environment Programme (UNEP) and the UN Programme for Human Settlements (UN-Habitat ), and as a rapidly expanding regional development hub. Today, Nairobi’s UN Gigiri Complex stands as a potent symbol of the United Nations’ commitment to equitable social and economic development, and to breaking the shackles of poverty on the world’s poorest continent.
Link to the website of the United Nations Office at Nairobi
At the invitation of the Government of Austria, the International Atomic Energy Agency and the United Nations Industrial Development Organization established their headquarters in Vienna in 1957 and 1967, respectively. In the 1970s, the Government provided a permanent residence for those two organizations: the Vienna International Centre (VIC), which was officially opened on 23 August 1979. To make full use of the new facility, other United Nations units were transferred from New York and Geneva to Vienna. Many of them were consolidated in the United Nations Office at Vienna (UNOV), which was established on 1 January 1980.
Link to the website of the United Nations Office at Vienna