The San Francisco cable car system is the world's last manually operated cable car system. An icon of San Francisco, California, the cable car system forms part of the intermodal urban transport network operated by the San Francisco Municipal Railway, or "Muni" as it is better known. Of the twenty-three lines established between 1873 and 1890, three remain (one of which combines parts of two earlier lines): two routes from downtown near Union Square to Fisherman's Wharf, and a third route along California Street. While the cable cars are used to a certain extent by commuters, their small service area and premium fares for single rides make them more of a tourist attraction. They are among the most significant tourist sites in the city, along with Alcatraz Island and Fisherman's Wharf. The cable cars are the only mobile National Monument in the world, and are listed on the National Register of Historic Places.

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