@ Musée Mécanique (Cue pipe organ music and crazy laughter)
Its worth it to brave the crowds in Fisherman's Wharf to explore this funky museum. Part museum, more arcade, its free to wander through, and you're able to "play" a lot of the games. Some of the machines are games of skill as we're probably most used to, others you put a coin in and watch a scene animate. It's a lot like going through your eccentric old neighbor's basement: very cool and creepy at the same time. You can't help but wonder if some of those machines come alive at night (haven't you seen that movie?)...
Reminiscent of the crazy Girard collection at the International Folk Art Museum in Santa Fe.