Hiller Aviation Museum
A very interesting historical museum, especially for the kids or aviation buffs. Small and somewhat expensive ($15/adult) but packed with interesting aviation history from as far back as 1869. For example, a real 2-story Boeing 747 cockpit, , and several of the oldest flying machines ever made and Microsoft computer flight simulator programs you can rent for a reasonable rate.
You can see it in about 2-3 hours. For more entertainment attend one of their special events, usually held on a Saturday once/month and included with admission.