Chicago in and of itself isn't super different, though we have become the food center of the US, much to New Yorker's dismay.
What I like about Illinois is we're right in the middle pretty much, and by being right by Chicago, we're literally in the middle of /everything./
Want a certain beer? It probably goes to Illinois before many other states. Want a certain food? Chicago/the area literally has every kind you could imagine. Literally every musical act will perform here, it's the home of the blues, there's a lot more to see than people realize. Hell, even more than I realize, I can admit that.