Exact federal listing answer
Is Adena (Thomas Worthington House) on the National Register?
Yes · NPS status: Listed
Yes. Reference 70000515 is listed.
Yes. The U.S. National Park Service listed-properties dataset through May 22, 2026 identifies Adena (Thomas Worthington House) as Listed in the National Register of Historic Places under reference 70000515.
Federal statusListed
National Register reference70000515
Listed dateNovember 10, 1970
Property categoryBuilding
Published addressBox 831 Adena Rd.
LocalityChillicothe, Ross County, Ohio
Significance levelNational, State
Published acreage300
Exact answer boundaryThis confirms the named federal record only.
It does not prove that another address lies inside this property or district, establish local landmark status, decide preservation review, define a legal boundary, or describe ownership or current condition.
Why the wording is date-boundedThe answer reflects the NPS dataset published through May 22, 2026 and a live NPS GIS Listed-status cross-check made September 20, 2026. NPS notes that spatial points and polygons may need correction and are not legal documents.
Additional published fields
Areas of significance: LANDSCAPE ARCHITECTURE, POLITICS/GOVERNMENT, ARCHITECTURE.
Other published names: Mount Prospect Hall.
Same locality
Other released Chillicothe records.
Each linked page answers a separate named federal record.