A.O.
Definitely worth the drive. Not even that far. About 20-25 minutes from downtown. I like it much better than Chicago Children's Museum. Better contained, cleaner and much better exhibits. Try to avoid weekends and days when most schools are off. Can get very crowded. You can go on their website, but doesn't do it justice. my daughter had her birthday party there 2 years in a row and we are big supporters.