What to do in downtown Chicago aside from the "common"?

I live in the Chicago suburbs so I have done all the common touristing stuff all to often (all sports, The Bean, pizza, Navy Pier etc.) I will be staying on then Mag Mile for 5 nights, and while I will be revisiting all the popular things, I am open to new experiences / little known activities downtown. Any suggestions? Thanks!

PS: I am satisfied with my knowledge of pizza joints downtown. Do not suggest any, the lesser known pizza places deserve to be unexposed. AKA I know a place that needs to stay under the radar, lets keep it that way.

Richard2017-11-13T12:54:25Z

There are a number of lesser known museums like the Museums of Modern Art, Broadcasting, Spertus, Surgery, etc. Go to some of the interesting (and safe) ethnic neighborhoods like Devon Avenue between Western and Kedzie (Pakistani, Indian, Orthodox Jewish), Chinatown, Pilsen, Little Village, Argyle from the Red Line to the Lake (Vietnamese), and Jefferson Park (Polish).