Ohio History Connection Logo

Fort Ancient Earthworks & Nature Preserve

North America’s largest ancient hilltop enclosure earthwork
  • Address
    • Fort Ancient Earthworks & Nature Preserve
    • 6123 State Route 350
    • Oregonia, OH 45054
    • Open in Google Maps
    Contact Information
  • Admission
    • Adult: $6.00
    • Senior: $5.00
    • Student (6-16): $5.00
    • OHC member: Free
    • Children under 6: Free
    Hours & More

    April–November

    Closed on Mondays
    Tues - Sat: 10 a.m. – 5 p.m.
    Sun: Noon – 5:00 p.m.

    December–March
    Sat: 10 a.m. – 5 p.m.
    *Closed Monday–Friday, except by appointment

  • Historical Topics
    • African American History
    • Archaeology
    Regions
    • Southwest Ohio
    Audiences
    • All Audiences

Visit

Explore North America’s largest ancient hilltop enclosure, built 2,000 years ago. A National Historic Landmark, the site is thought to have served as a social and ceremonial gathering place. Experience an on-site museum, recreated American Indian garden and three miles of hiking trails with scenic overlooks. Average visit time: Allow 2+ hours

History

Fort Ancient Earthworks & Nature Preserve is Ohio’s first state park.  In April 1891, the state legislature authorized Ohio Archaeological and Historical Society (now the Ohio History Connection) to care for the site. In 1966, Fort Ancient became nationally recognized when it was named a National Historic Landmark. Fort Ancient State Memorial continues to be owned by the Ohio History Connection, but is now managed by the Dayton Society of Natural History.

Fort Ancient Earthworks & Nature Preserve is managed locally by the Dayton Society of Natural History.