I just heard an ad on the radio and it mentioned something about LegoLand. Apparently there's a dedicated Lego store and entertainment place that was built just last year in Shaumburg, IL. A reasonable drive away.
Also the radio spot mentioned something about it being the first dedicated Lego place in the U.S., but that's a lie. Anyone who's been to Disney World in Orlando, FL. knows they've had a Legoland for years with an outdoor park and everything. So to be realistic, Legoland Shaumburg is more likely to be second or third.
Despite that oversight, Legoland Shaumberg might be fun to poke around at if you're a Lego geek or a kid. Probably moreso for kids, since their website doesn't seem to feature the Technics or robot stuff as much as the MiniFig sets and Duplo style stuff.