Learn how the museum's new interior roads will help improve the DuPage River watershed. Take a 2 p.m. guided tour on Sunday of the rain gardens to discover how to design and select plants for this beneficial type of garden. Visit activity stations and make a Soil Sammy, Garden in a Glove and Dissect a Seed; pump water from an old fashioned pump connected to cisterns; and watch demonstrations that share the science behind the stormwater improvements.