Where should I visit?

I've got a rare three days coming up w/no obligations (cancelled class, no work) and was hoping to get out of Illinois for the first time this year. It'd have to be at most a half-day's drive from Chicago. I probably won't be able to convince any of my buddies to go with on such short notice. So where should I go? My interests include pretty and friendly girls, and drinking. I'm not adverse to interesting scenery, landmarks, or art, though. Also, if anybody wants to shack me up for a night, your suggestion will move to the top of my list.