If you're going to be in the Bay Area this Sunday, I highly suggest you head over to one of the 17 Bay Area museums that will be free for the day! Check out the full list here.
Last week I visited the recently reopened Contemporary Jewish Museum and can highly recommend it. The current exhibit, although sparse, is totally worth checking out, especially for free.
Dwelling in a different city? Not to fear!
Head over here for a list of websites that will point you in a more affordable direction.