There is a random hill just north of the city, right in the middle of neighborhoods in Marin, that is full of free roaming horses. It's a public park...anyone can go, anytime. It is SO weird! You can just walk all over this hill and the horses walk all over the same hill! They are old movie/TV horses so they're supposedly trained and know how to act around people...but it is super crazy to just hang out with random horses! Mostly I made my kids keep a safe distance but we did pet a few!
The view of SF from the top of the hill.