Here are top recommendations of things to do in Nairobi during a long layover courtesy of Titus. Kenya has a very convenient online eTA (Electronic Travel Authorisation) system that makes leaving the airport quite simple. Nairobi National Park: This is the single city in the world holding a national park inside its borders. Head straight into a safari without a long drive. The Giraffe Center is also recommended. Ride a Matatu: You cannot visit Nairobi and not ride a matatu. These public buses ar