Children's Museum Musts?

So I am going on a field trip today with my son's second grade class... I know all children's museums are different but ...any advice on exhibits we should not miss???

06
    02/04/14
    Tessa
    Have a good time. I cant wait till my girls are in school and i can do things like that with them :)
    0
      02/05/14
      It was awesome! The children had so much fun!
      0
      About Magen
      Birth: December 31
      On Moms.com since: Sep 14, 2013