Columbus is cool....it has some decent history, and if you like science, there's a COSI building that is all about that.
Personally, Cincinnati is better. It's pretty much on your way, PLUS free room and board and food (I'm just sayin')....and honestly, I like the Cincy history better. We have decent food (CINCY STYLE CHILI!!!!), and some awesome other places to see. So if you change your mind......hehehe.