Lake Geneva in the state of Wisconsin is about an 80 miles drive northwest of Chicago, and makes for a lovely day trip. We lucked out with the weather when we visited yesterday for the first time. The area just one block north of the lake around Main and Broad St has a number of very eclectic shops and restaurants. There is ample seating and a mini-beach in addition to picnic greens all overlooking the lake. See my post about Kilwin's confectionery, also under the 'Mid West' category.
What would be your favorite day trip from where you are? Drop me a line with your suggestion.