Nairobi National Park is a unique ecosystem by being the only protected area in the world close to a capital city. The park is located only 7 km from Nairobi city centre. The savannah ecosystem comprise of different vegetation types. Open grass plains with scattered acacia bush are predominant. The western side has a highland dry forest and a permanent river with a riverine forest. To the south are the Athi-Kapiti Plains and Kitengela migration corridor which are important wildlife dispersal areas during the rain season.

Man-made dams within the park have added a further habitat, favourable to certain species of birds and other aquatic biome.The park has a diverse birdlife with 400 species recorded. However, all species are not always present and some are seasonal. Northern migrants pass through the park primarily in late March and April.

Nairobi National Park is one of the most successful of Kenya's rhino sanctuaries. It is already generating stock for reintroduction in the former range and in other sanctuaries. Owing to this success, it is one of the few parks where a visitor can be certain of seeing a black rhino in its natural habitat.

Major wildlife attractions are the Black rhino, lion, leopard, cheetah, hyena, buffaloes, Giraffe, zebra, wildebeest, elands and diverse birdlife with over 400 species recorded. Other attractions include the Ivory burning site Monument, Nairobi Safari Walk, the Orphanage and the walking trails at hippo pools.