Have a Ferris Bueller day! Go to Sears Tower, the Art Institute, walk through Grant Park and see Buckingham Fountain, and eat lots of pizza.
Quick Tips: If it's less than 1 hour to closing, you can get discounts into the Art Institute (see journal).
Best Way To Get Around: In order to cover large distances economically, we would taxi to one end of the city and walk our way back to the hotel. We did this for the Magnificent Mile and our two trips to North Beach. The trains in Chicago are also excellent. For , we both rode into downtown from Hanover Park, Illinois, and took a taxi from the train station. Considering it's a DAY to park a car at the hotel, that's a pretty good deal.