Excellent hands-on science museum. One of the best...

Excellent hands-on science museum. One of the best things to visit in the whole Bay Area, if not the world. We particularly loved the sand, magnetism, and electrical exhibits, plus the movies and movement tracking screen. The tactile dome was a splurge but lots of fun. A once in a lifetime thing. Can't wait to go back for more. In four hours we barely scratched the surface.