[vanilla_nut]

I second the Alcatraz night tour- not only is it a much cooler way to experience Alcatraz, you also get stunning views of both SF and the bridge. I really love your list, even though I don't know what the Exploratorium is.

[pmoriarty]

It's a science museum... the most amazing one I've ever seen by far. It's super geeky and full of interesting exhibits and gizmos, most (all?) of them made by hand on-site. It's an absolute must for anyone interested in science or technology. Go see it!!!

Interesting fact about it that I only recently found out:

The Exploratorium was founded by Robert Oppenheimer[1] ("the father of the atomic bomb") after his forced resignation.[2] If you keep an eye out, there are some plaques talking about this history at the museum, and there's also at least one uncaptioned atomic-bomb-related photo (of the first milliseconds of an atomic bomb explosion) on the walls.

[1] - https://en.wikipedia.org/wiki/Robert_Oppenheimer

[2] - https://www.exploratorium.edu/about/history/frank

[isaaclyman]

The Exploratorium is a huge hands-on science museum. Everything sciencey that you could ever want to touch (or never imagined touching) is there. It's slightly geared toward the younger crowd, but my wife and I went last year and loved it. Stayed almost the whole day. Everyone should visit at least once.