Let's go to Hamburg...
This miniature airport's planes take off and land. How cool is that? "Men come in as adults and turn into children." I wanna, I wanna... (Thanks, Ben.)
Since a short stint working as an air brakeman/car knocker at Chicago & North Western's Proviso Yard, I've loved the railroad. So, despite my love for planes, I think the miniature railway would have me hooked. Have any readers checked out the excellent HO scale train exhibit downtown Wheaton, in the basement of the DuPage County Historical Museum? Trains run from 1:30 to 3:30 PM on the third and fifth Saturday of each month.
Of course, I suppose if you wanted you could drive an hour and go to the Museum of Science and Industry.