My vote is chicago, as that is the only place that I will be able to go this summer.
Brinnel -- There is plenty to do in Chicago! I can't name anything special off the top of my head, but check out these links. they should give your parents a good argument [img]smilies/biggrin.gif[/img]
http://www.ci.chi.il.us/Tourism/ http://www.chicago.il.org/
if you are really interested, I suggest checking out a local travel agent and getting some pamphlets. Doing that might be less overwhelming!
-Gwindor