👉 Nairobi is a city located in Kenya. It is the capital and largest city of Kenya, with a population of over 3.5 million people as of 2021. The city was founded by British colonialists in 1899 to serve as a major port for the East African Railway, which later became part of the London & North Eastern Railway. Nairobi is known for its vibrant culture, rich history, and diverse population.