Cable car of the Powell-Hyde line
Cable cars were invented in 1873 by Andrew Hallidie to climb the hills of San Francisco. Many cities once had cable cars, but today, San Francisco's 3 lines are the only ones left in the world. The single-ended Powell Street cars are the older of the two types now in service. The Powell cars have one open grip end and can be turned only with the help of the turntables built into the street at the ends of the lines.