Nairobi was founded in 1899, the city was handed capital status from Mombasa in 1905. Nairobi is the capital and largest city of Kenya. It is popularly known as the “Green City in the Sun”. Nairobi is also the capital of the Nairobi Province and of the Nairobi District. The city lies on the Nairobi River, in the south of the nation, and has an elevation of 1661M (5450 ft) above sea-level. Nairobi is currently the 4th largest city in Africa and the most populous city in East Africa, with an estimated urban population of between 3 and 4 million. According to the 1999 Census, in the administrative area of Nairobi, 2,143,254 inhabitants lived within 684 km².Nairobi is now one of the most prominent cities in Africa politically and financially. Home to many companies and organizations, Nairobi is established as a hub for Airlines into Africa, business and culture within East Africa.