San Francisco's Cable Car Museum has the distinction of being recognized as one of the top 10 free attractions in the world. It also offers a unique peek into how San Francisco's signature means of transportation is constructed and operated. You will be able to take several photos from the second level that overlooks the various exhibits, as well as get close to different displays that feature vintage cars in either completed form or in various parts. The various informative displays illustrate the compelling history of cable cars.
If casting your fishing line out and nestling in a comfortable chair to wait for the big catch sounds like a great way to spend an afternoon, then make your way to the San Francisco Municipal Pier. This site not only offers good fishing, but better than average results await if you go crabbing for rock crabs. Bring a jacket as the winds are chilly on the pier no matter what time of year it is.