Nairobi has many parks and open spaces throughout the city. Much of the city has dense tree-cover and plenty of green spaces. The most famous park in Nairobi is Uhuru Park. The park borders the central business district and the neighbourhood Upper Hill. Uhuru (''Freedom'' in Swahili) Park is a centre for outdoor speeches, services, and rallies. The park was to be built over by former President Daniel arap Moi, who wanted the 62-storey headquarters of his party, the Kenya African National Union, situated in the park. However, the park was saved following a campaign by Nobel Peace Prize winner Wangari Maathai.