Cable car system as an adaptation to steep topography (Cable Car Museum)

San Francisco's cable car system was developed in the 1870s to traverse steep urban grades and remains an operational example of mechanical adaptation to extreme city slopes. The Cable Car Museum at 1201 Mason Street displays the historic winding machinery and the subterranean cable conduit system that still power the city's cable cars, illustrating how infrastructure was engineered specifically for San Francisco's steep terrain. The system is the world's last manually operated cable car network in regular transit service.