Mombasa travels to the Swahili Coast and made some mention of the city, although he only stayed one night. He noted that the people of Mombasa were Shãfi'i Muslims, religious people, trustworthy and righteous. Their mosques are made of wood, expertly built. The exact founding date of the city is unknown, but it has a long history. Kenyan school history books place the founding of Mombasa as 900 A.D. It must have been already a prosperous trading town in the 12th century, as the Arab geographer Al Idrisi mentions it in 1151. The oldest stone mosque in Mombasa, Mnara, was built
Mombasa–Nairobi Standard Gauge Railway transportation corridor between Tsavo East National Park and Tsavo West National Park. Because they are at ground level, collisions with wildlife occur. The viaducts and embankments elevate the SGR above ground level, allowing wildlife to pass safely underneath. Six underpasses also allow wildlife to move safely beneath the SGR. Passenger trains run between Mombasa Terminus in Miritini and Nairobi Terminus in Syokimau, which is near the Jomo Kenyatta International Airport Freight services are provided between Port Reitz, which is just west of Mombasa Island, and the inland container depot in the Embakasi division of Nairobi. There are nine passenger stations