If you happen to be in San Francisco soon, I highly recommend the “Take your time” installation on the 4th floor by Olafur Eliasson. SFMOMA says:
Widely heralded as one of the most important artists of his generation, Olafur Eliasson nimbly merges art, science, and natural phenomena to create extraordinary multisensory experiences. Challenging the passive nature of traditional art-viewing, he engages the observer as an active participant, using tangible elements such as temperature, moisture, aroma, and light to generate physical sensations.
I liked it because it was really sciencey. They’ve also got a really great photo exhibit on a lower floor.