I just spent a week with my sister in Chicago. Boy did we have fun! We explored the city by day and night and admired all different kind of architecture. We saw an opera (Don Pasquale), two dance performances - one of which was absolutely amazing. It was a Canadian group called ScrapArtsMusic, which gives quite an innovative percussion performance. We saw two comedies, visited the Art Institute and took a guided tour of the Chicago Cultural Center.
Overall a ton of fun, but exhausting!