Heart Stone Castle is nestled in the Boston Mountains (top of the Ozarks up to 2560 ft.) on 6.91 Acres near Devils Den State Park. Drive across the 70 foot bridge as you enter the property or if you are more adventurous, take the walking bridge. Breathtaking views from every window and character throughout the Castle. Find the waterfall, secret door, little kid bunkbed closet, pull chain toilet, upper balcony, library, stream and more.