Well car stuff or other interests as well? What kinda things do you usually like, I have PILES of stuff I could tell you about. Right off the bat there is a very nice little auto museum in Sacramento called "Towe auto museum" (Click here)
. It is really a nice place with some custom and race car history stuff, very cool.
Then right there in Sacramento is a first class art museum that will stand up against any art museum I have ever been in, some spectacular pieces. It's the Crocker Art Museum (click here)
Let me know what else, come on, AT&T park! I have seen about 18 MLB parks and this one is pretty hard to beat, if it can be. You MUST walk out on the Golden Gate bridge, that is a MUST.