We recommend the Architecture Boat Tour from the Chicago Architecture Foundation to all of our guests that visit Chicago. The tour takes you along the river through the heart of down town. It's a great way to enjoy a summer day while learning about Chicago history and architecture.
The Art Institute was rated the best museum in the world a few years back, and it certainly lives up to the hype. If you're a fan of impressionists, modern, or really anything else, it's a great museum right next to Millennium Park, "The Bean," and Michigan Ave.