Nairobi is the capital city of Kenya.

Nairobi is also the largest city in Kenya. The name comes from the Maasai phrase Enkare Nairobi, which translates to "place of cool waters", a reference to the Nairobi River which flows through the city. The city proper had a population of 4,397,073 in the 2019 census, while the metropolitan area has a population of 9,354,580. The city is popularly referred to as the Green City in the Sun. Nairobi was founded in 1899 by the colonial authorities in British East Africa, as a rail depot on the Uganda - Kenya Railway.