199 Museum way San Francisco, CA
Perched on a hill in central San Francisco, this museum is made for the younger crowd, and its FREE! A puppet theatre welcomes you as you enter. A large room full of interesting animals, some you can pet if they aren’t hiding, is on the right side as you enter. There is an area to build leggo structures, then see if they can withstand a mini earthquake. Downstairs on Saturdays the model train room is open. All in all its a great place to burn an hour or two.