The Museum of Science & Industry in Chicago is having FREE general admission June 7-11.

The MSI is a great museum with a lot of hands-on activities for adults and children alike.  My family has a membership and we were just there a few weeks ago.  Highly recommended!!

NOTE: Omnimax films, the onboard U505 tour, and certain temporary exhibits are NOT included in general admission.  These require separate admission fees, even on Free admission days.

Check their website for more information about the exhibits, ticket prices on normal days, and parking fees (applicable even on free admission days).