Fort Ancient


Fort Ancient

6123 St. Rt. 350
Oregonia, Ohio 45054
513.932.4421 or
Fax 513.932.4843



10 a.m.–5 p.m.
Sunday: Noon–5 p.m.
Closed on Mondays




Adult: $7 
Seniors (60+): $6
Students (6–16): $6
Child (5 & under): Free

Ohio History Connection member*: Free

Outdoor Admission Only 


*Members must present their membership card at the registration desk.


Managed by the Ohio History Connection

 Ohio History Connection Logo CMYK Standard


History of Fort Ancient Earthworks & Nature Preserve

In Warren County, Ohio, an isolated peninsula rises 80 meters (about 260 feet) above the muddy banks of the Little Miami River. There exists an immense monument to the dedication and technological savvy of the original inhabitants of prehistoric North America. This vast 51 hectare (about 126 acres) plateau is enclosed by embankment walls that stand 1.5 to 7 meters (about 5 to 23 feet) high, constructed by repeatedly dumping baskets loaded with soil upon one another. The Hopewell, known for their engineering expertise, built these walls and many other features both within the enclosure and on the steep valleys that surround the site: conical and crescent-shaped mounds, limestone pavements and circles, and many subsurface elements that are currently coming to light. Today, the Fort Ancient Earthworks & Nature Preserve is listed on the National Register of Historic Places because of its importance to Ohio prehistory.


Children and Archaeology

Pump Drill

Lynn Simonelli, Vice President of Collections and Research for the Dayton Society of Natural History (the parent-organization of SunWatch Indian Village/Archaeological Park and the Boonshoft Museum of Discovery), shares her adventures as an archaeologist and gives caregivers tips to help introduce their children to this fascinating field.


What is Archaeology

Dig at SunWatchArchaeology is the study of the human past.  Archaeologists use the material remains of human activities to reconstruct the behaviors and beliefs of prehistoric peoples.  One of the most unique features of the science of archaeology is its ability to study human behavior over spans of hundreds or even thousands of years.


Ohio Prehistory


Prehistory is defined as the period before the development of written records. The first written records associated with Ohio come from the mid-1600s, and this is considered the beginning of the historic period in this region. The Prehistoric Era in Ohio is divided into four periods: The Paleo-


Fort Ancient Ongoing Research and Programs

The embankment walls at the Fort Ancient earthworks in Warren County, Ohio, have been under siege by erosion since their construction nearly 2,000 years ago. In an attempt to repair damage already done and prevent further harm, the Ohio Historical Society (OHS) began a mitigation campaign with the help of Save America’s Treasures, a public-private partnership between the National Park Service and the National Trust for Historic Preservation.


Archaeological Institute of America

Archaeological Institute of America

Dig in to history!

Be part of the Dayton Society of the Archaeological Institute of America, and enjoy the individual and group benefits.