San francisco downtown tour hop on hop offr r when you visit a city like san francisco the last thing you want is to find yourself wandering aimlessly map in hand searching for the amazing landmarks youandrsquove always wanted to see make the most of your precious time with 24 hoursandrsquo unlimited use of this bus tour which will take you directly to san franciscoandrsquos most famous sightsr r the downtown loop is a hop on hop off tour meaning you can take your time exploring at ea