I was in Chicago a few weeks ago and thanks to the suggestions of Bob Coleman and Harryamb2 I made it to the Museum of Science+Industry there. They have a Stuka, captured the North Africa theater, and U-505, a Type IX-C U-boat. Apparently the U-boat used to be outside in the open weather but now they house it indoors. It is displayed rather nicely with a torpedo leaving one of the tubes. I will share a few photos. I took several but my camera was not on the right setting and most did not come out well enough to share. I was very disappointed that they were sold out of tickets for the interior tours of U-505 that day so I just have a couple exterior shots.
U-505 Type IX-C