San Francisco MUNI Cable Cars 28 and 25 meet at Union Square on the Powell-Mason Street Line.

San Francisco MUNI Cable Car 25 rumbles through Union Square on the Powell-Mason Street Line.

San Francisco MUNI Cable Car 21 rumbles through Union Square on the Powell-Mason Street Line. The brick building (at left) used to be a four story flagship Borders Book store.

San Francisco MUNI Cable Car 10 rolls to a stop at the north end of the Powell-Mason Street Line. A beautifully restored 1968 Cadillac DeVille Convertible enjoys a quiet evening parked along San F... (more)

San Francisco MUNI Cable Car 9 rumbles through Union Square at Ellis and Powell Streets.