Johnson-Sauk Trail State Recreation Area is an Illinois state park in Henry County spanning 1,365 acres of woodland and open water. The park includes many trails and a campground, with Johnson Lake at its center. This 58-acre lake reaches a maximum depth of 21 feet and supports fishing and boat rentals, making it a main destination within the park. Near Ryan’s round barn is a scenic 3-acre pond. The round barn stands out as one of the park’s distinctive landmarks and is the focus of an annual tour, giving the area both outdoor recreation and local character.