I'm planning a trip back to Chicago in a few months. Last time I was there was for work so I never really got to see the city during the day and didn't get to see much during the night. I'm looking for sites that I absolutely can not leave with out seeing. Leave me a comment with anything that I must see or must do while I'm there! I can't wait to go back, what I did see while there the last time I loved it! So for those of you that live in the area or have been there your help is appreciated!