Kampala, with a population of approximately 2.5 million, is by far the largest city in Uganda. It is not yet completely overwhelmed with traffic and sprawl like Nairobi and Lagos. Additionally, Kampala is very safe to walk around, even at night, a welcome fact for many a high-strung visitor arriving from Nairobi. Uganda, as the recipient of massive amounts of Western aid money, hosts large numbers of Non Governmental Organizations (NGOs). Most of those NGOs are based in Kampala, so there is an established expat scene in the city.