I'm spending the weekend in San Francisco, and after a week indoors at a conference I'm keen to do something outside. My plan had been to ride the trolley down to Fisherman's Wharf, hire a bike and cycle to the Presidio, across the Golden Gate Bridge, up into the Golden Gate National Recreation Area, then down to Sausalito. I've done this before in nice weather and it's a really great trip! Unfortunately, it's set to misty and raining this weekend, and I'm not sure it'll work so well with fog hiding most of the views...
Are there any outdoor activities to do in San Francisco that do work well on misty and rainy days? (Specifically, ones that can be reached without a car, and are suitable for a touristy half day rather than a new sport to get into over time)