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Photograph of Fort Ancient
Photograph by Rdikeman at English Wikipedia, CC BY-SA 3.0. Via Wikimedia Commons.

Fort Ancient

A National Historic Landmark. Listed on the National Register of Historic Places in 1966. 8 historic topographic surveys show this location, the earliest from 1914.

From the record

One of 43 National Register listings published here for Warren County · listed in 1966 · category: Site · a National Historic Landmark.

Sources: the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article

The listing

  • Address. OH 350, Lebanon
  • When was it listed? October 1966
  • Category. site
  • National Register reference number. 66000625 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Then and now

1914 to 1996

The ground this property stands on, surveyed 82 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

Topographic sheet covering Fort Ancient, surveyed 1996
Topographic sheet covering Fort Ancient, surveyed 1914

Mines and quarries near this property

1 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 1 working within 5 miles of Fort Ancient: 1 producer. All of them still produce. What was taken out: Sand and Gravel, Construction. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Where SiteCommodity StatusRecorded
Morrow Gravel Plant No 1 Mill & PitSand and Gravel, ConstructionProducer

Every working recorded in Warren County

Maps showing this location

8 surveys

United States Geological Survey topographic sheets whose coverage includes this point. Matched by taking the middle of the area the National Park Service maps for this listing, then testing that coordinate against the published boundary of every sheet.

Listed places nearby

6 within 8 miles

Other National Register properties close enough to walk or drive between, ordered by distance from this one. Both positions come from the same geocoding pass that matched these properties to their map sheets.

Photograph PropertyDistance Listed
Crossed Keys Tavern0.9 miles1976
Mohrman-Jack-Evans House6.4 miles1984
East End Historic District6.4 miles1984
Maplewood Sanitorium6.6 miles1984
Lebanon Academy6.7 miles1984
Floraville Historic District6.7 miles1984

Sources for this property

National Archives recordThe nomination case file for reference 66000625 in Record Group 79.
Wikipedia articleCommunity-written account of this property, licensed CC BY-SA.
Warren CountyAll 43 listed properties in this county.

Provenance

  • Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
  • Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
  • How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
  • Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.