Did you know about this FREE SF activity? Located near Corona Heights on top of a Castro hill, this museum features exhibits with one of my favorites being the live animals including reptiles, fish, and even a raccoon. Downstairs, you’ll also find a cool model railroad with miniature sets and moving trains. There are a few more things to look at throughout the museum too, so keep an eye out and see what you find. Although free, definitely consider a donation of any amount during your visit!