The San Francisco link auto framework is the world's last physically worked link auto framework. A symbol of San Francisco, the link auto framework shapes some portion of the multi-purpose urban transport organizes worked by the San Francisco Municipal Railway.
Of the 23 lines set up in the vicinity of 1873 and 1890, just three stays one of which joins parts of two prior lines: two courses from downtown close Union Square to Fisherman's Wharf, and the third course along California Street.
While the link autos are utilized to a specific degree by workers, by far most of their 7 million yearly travelers are tourists.
They are among the most noteworthy vacation destinations in the city, alongside Alcatraz Island, the Golden Gate Bridge, and Fisherman's Wharf. The link autos are recorded on the National Register of Historic Places.