The Cable Car Museum is a small museum located in San Francisco, California, that celebrates the history of cable cars, which are an important part of the city's transportation system. The museum is housed in the historic Washington/Mason cable car barn and powerhouse, which was built in 1887 and is still used to house and maintain the city's fleet of cable cars.

The museum features a collection of antique cable cars, photographs, and artifacts that tell the story of the cable car system, including the technical innovations that made it possible. Visitors can see the giant winding wheels and cables that power the cable cars, as well as exhibits about the history of the cable car system and its impact on the city.

One of the highlights of the museum is a working model of the cable car system, which shows visitors how the cars are powered by the underground cables. Visitors can also watch cable car mechanics at work in the powerhouse, where they repair and maintain the city's fleet of cable cars.

Admission to the Cable Car Museum is free, and the museum is open seven days a week. The museum is a popular destination for tourists and locals alike, and it provides a unique look at the history of San Francisco's transportation system.