Located at 16062 OH-104, Chillicothe, OH 45601, Hopewell Culture National Historical Park preserves earthworks and burial mounds from the Hopewell culture, indigenous peoples who flourished from about 200 BC to AD 500. Pets on a leash no longer than 6 feet are allowed on trails and park grounds, but are not permitted in any park buildings or structures.
More information on the Hopewell Culture National Historical Park pet policy
