Location: Castlewood State Park Park Address: 1401 Kiefer Creek Rd · Ballwin, MO Trail Length: 3.4 miles Park Website: https://mostateparks.com/page/89611/castlewood-state-park-trails About the Park: In the early 1900s, the area that’s now Castlewood State Park was a popular retreat for partying St. Louisans. The dance clubs are gone, but the winding Meramec River and the lush […]