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Fort Ancient Earthworks & Nature Preserve

Fort Ancient features 18,000 feet of earthen walls built 2,000 years ago on a hilltop terrace overlooking the Little Miami River by the Hopewell culture, who used the earthworks for ceremonies and social gatherings. The stone-covered earthworks at the site are astronomical-marking mounds-by observing the movements of the sun and moon people could gather at certain days of the year.

The site offers beautiful vistas along hiking trails and overlooks. Convenient picnic areas are available throughout the site.

The Museum at Fort Ancient features an interactive experience of 15,000 years of American Indian history in the Ohio Valley. The Museum also contains a classroom, a research area and a sales shop with many fine American Indian items.

Fort Ancient Earthworks & Nature Preserve
6123 St Rt. 350

Oregonia, Ohio 45054

Phone Number(s)

Toll-Free: (800) 283-8904


Sunday: 12:00 PM - 5:00 PM
Tuesday: 10:00 AM - 5:00 PM
Wednesday: 10:00 AM - 5:00 PM
Thursday: 10:00 AM - 5:00 PM
Friday: 10:00 AM - 5:00 PM
Saturday: 10:00 AM - 5:00 PM

Special Hours:


Calendar of Events


Adults: 6.00
Children 6 - 12: 4.00
Children 5 and Under: FREE
Member: FREE
Ohio Historical Society and Dayton Society of Natural History

Accepted Forms of Payment

Cash, Mastercard, Visa


Park Only/$8: 8.00 - 8.00

Fort Ancient Earthworks

Fort Ancient features 18,000 feet of earthen walls built 2,000 years ago by American Indians who used the shoulder blades of deer, split elk antler, clam shell hoes and digging sticks to dig the dirt. It also has several mounds like this one used by the Hopewell to track the moon and sun throughout the year.

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