I'm cheating since this is from a few weeks back--We stopped at the Seuss sculpture garden in Springfield on the way to my sister's house. We also went into the science museum to see the dinosaurs. I'm sure we'll go back-- it is a great stopping point with much to see and do, and not too big or overwhelming or crowded.
I suddenly looked into the future: Peabody museum! Mystic aquarium! A zoo!