This past weekend we took a little trip up to the Chicago Botanic Garden so we could check out the Bonsai Show. Maddie has a bonsai book (which Pete and I purchased years ago at the Bonsai Show at the CBG) and has been interested in getting a bonsai of her own. If you have any interest in bonsai, I have to recommend this yearly event which includes an exhibition of many bonsai created by both amateurs and professionals as well as a nice selection of vendors -- some quite helpful.
There is so much to see at the Chicago Botanic Garden in addition to the show. The variety of gardens, all within walking distance of each other, are quite amazing. There is a rose garden, fruit and vegetable gardens, water & waterfall gardens, a Japanese garden (actually a couple of islands) and so much more.
If you live in the Chicago area and haven't been to the Chicago Botanic Garden before, I highly recommend it. Check out their website before you go because they have lots of great events all season long.