The United Nations Office at Nairobi (UNON) is the only UN headquarter office in Africa and the global south and serves as the representative office of the UN Secretary-General in Kenya. UNON provides administrative and other support services to the UN Environment Programme (UNEP), the UN Resident Coordination System (RCS) and the UN Human Settlements Programme (UN-HABITAT) globally in 166 countries. UNON also provides joint and common services to other organizations of the UN System in Kenya. Home to diverse fauna and flora in a rich environmental ecosystem, UNON sits on 140-acres of land, the largest of any UN compound in the world.