Fort Ancient
National Historic Landmark

Fort Ancient

Lebanon, Warren County, Ohio
Listed
October 14, 1966
Type
Site
Period
Early Republic
Ref No.
66000625

About this property

Fort Ancient (33 WA 2) is a Native American earthworks complex located in Washington Township, Warren County, Ohio, along the eastern shore of the Little Miami River about seven miles (11 km) southeast of Lebanon on State Route 350. The site is the largest prehistoric hilltop enclosure in the United States with three and one-half miles (18,000 ft) of walls in a 100-acre (0.40 km2) complex. Built by the Hopewell culture, who lived in the area from the 200 BC to AD 400, the site is situated on a wooded bluff 270 feet (82 m) above the Little Miami. It is the namesake of a culture known as Fort Ancient who lived near the complex long after it was constructed. Maintained as a state historical park, the site was designated a National Historic Landmark for its significance. The State of Ohio purchased the land and made it Ohio's first state park in 1891. In addition, this is part of the Hopewell Ceremonial Earthworks, one of 14 sites nominated in January 2008 by the U.S. Department of the Interior for potential submission by the United States to the UNESCO World Heritage List. It was officially designated a World Heritage Site in September 2023 together with the earthworks at Hopewell Culture National Historical Park and the Newark Earthworks. Fort Ancient is owned and operated by the Ohio History Connection.

Location

Lebanon, Warren County, Ohio
39.40711, -84.09478

Categories

PREHISTORIC
National Register nomination ›
Sources

Property data from the National Register of Historic Places, National Park Service (public domain).

Description adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License.

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Everything a full report reveals about Fort Ancient

This page lists Fort Ancient. A full Aubrey report for an address near it pulls together this listing alongside battlefield records, land patents, and every other historical record within a chosen radius:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Nearby Historic Sites

Crossed Keys Tavern
Early Republic
0.5 mi
Mohrman-Jack-Evans House
Industrial
5.9 mi
East End Historic District
Listed
6 mi
Maplewood Sanitorium
Industrial
6.1 mi
Lebanon Academy
Industrial
6.3 mi

Questions about this property

When was Fort Ancient listed on the National Register?

Fort Ancient was listed on the National Register of Historic Places on October 14, 1966.

What type of historic resource is Fort Ancient?

Fort Ancient is classified as a site in the National Register of Historic Places.

Is Fort Ancient a National Historic Landmark?

Yes. Fort Ancient has been designated a National Historic Landmark (NHL), the highest level of federal recognition for historic properties in the United States.

What is the period of significance for Fort Ancient?

The period of significance for Fort Ancient is recorded as the early_republic era.

Can I research the history near Fort Ancient?

Yes. Aubrey Research reports search National Register listings, battlefield records, land patents, and other primary historical sources within any radius of a US address. A report for an address near Fort Ancient will include this listing and all other historical records in the area.

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