Trondheim has an extensive public transport system which serves a large proportion of its citizens as well as tourists. AtB, the local public bus company, makes travel convenient within and between Trondheim and surrounding areas, offering routes throughout the region.Bus tickets, as well as tickets for the Trondheim Tramway, can be bought at AtB customer service centres or ticket machines throughout the city. An attraction in its own right, the tramway runs west to Lian, a popular recreational area which offers visitors a chance to get closer to nature.Trondheim is linked to its airport and other areas of Norway by Norwegian State Railways (NSB) which has stations in most parts of the country. There are also public bicycles available for tourists and residents between May and October, found in one of several bicycle racks across the city.