Rating: ★★★☆☆(3/5) - Decent Park
Surrounding the Argonne National Laboratory to the southwest of Chicago, Waterfall Glen Forest Preserve is one of Chicagoland's most popular outdoor destinations thanks to its beautiful scenery. Along the 9.5-mile trail looping around the park, you can see a waterfall, overlooks of Sawmill Creek and the Des Plaines River, restored prairie, and oak-maple woods.