John Hughes is the undisputed king of 80s movies and I couldn't begin to guess how many times I've seen Ferris Bueller's Day Off!
I've found an amazing video of a guy visiting all of the Chicago area filming locations...the video cuts together the original scene from the film in 1985 and how it looks today! According to the Herve Attia Youtube page, "Hughes wrote the screenplay in less than a week and shot the film—on a budget of $6 million—over several months in late 1985. Featuring many famous Chicago landmarks including the then Sears Tower and the Art Institute of Chicago, the film was Hughes' love letter to the city".
This is a must watch for Bueller fans!