The Powell-Mason line is a historic cable car route in San Francisco, California. It connects Powell Street near Union Square to Mason Street and provides access to popular tourist destinations, including Fisherman’s Wharf and Chinatown. The line is known for its scenic views and charming vintage cars. Established in the late 19th century, the Powell-Mason line is part of the larger San Francisco cable car system, which is the last manually operated cable car system in the world. The route is a significant part of the city's transportation network and a popular attraction for visitors.