Mombasa suburb on the mainland which contains a beach, oil refineries, housing estates etc. Moi International Airport and the Port Reitz District Hospital are in Port Reitz. Mombasa is also a county and divided into six constituencies and thirty wards. Mombasa is a major trade centre and home to Kenya's only large seaport, the Kilindini Harbour. "Kilindini" is an old Swahili term meaning "deep". The port is so-called because the channel is naturally very deep. Kilindini Harbor is an example of a natural geographic phenomenon called a ria, formed at the end of the last glacial period when the sea level
Mombasa Air Services traded Cooper Motor Corporation. To provide capital and purchase larger, more reliable turbo-prop aircraft to operate scheduled services, the firm was sold to CMC who subsequently sold to the Sameer Group and the operations moved to Nairobi. The purchase of turbo-prop aircraft did not occur at that time, and the start up of domestic scheduled tourist services from Mombasa to the game parks was delayed until the nineties. At December 2010, this airline is out of service but Mombasa Air Safari is now under the same ownership as the original Mombasa Air Services, and continues to operate from Moi Airport