Josephine Sculpture Park, Exit 53 B westbound, 53 A eastbound, Frankfort, about 5 minutes off highway

Free, User Submitted, dawn to dusk

User says: "There's plenty of room to wander, a variety of mowed grass paths -- also it's free and open every day." It looks pretty cool, and there are about two miles of trails. I'm guessing no bikes. 

This looks fun: "Bring your own spray paint, paint pens, or permanent markers and make your mark on this sculpture (pictured below) created by JSP 2018 Artist in Residence Peyton Scott Russell."

Trail Map