Harmony Forge Mansion
Why it's listed
Stone house at Milesburg in Centre County, dated by the nomination to c. 1810-20, with a two-story stone kitchen wing added by the mid-19th century. Its rubble limestone walls, steep gable roof and 6-over-6 windows reflect the scale expected of an ironmasters' residence. A c. 1850 remodeling added Gothic vergeboard trim and chimneys with pointed arches, which the nomination describes as a rare example of Gothic influence on local domestic architecture. The center hall interior retains an early Victorian dog-leg staircase with a walnut handrail. The house was associated with the Harmony Forge and Milesburg Iron Works, founded in 1795 by the Miles family, and it served as a meeting place for business and social gatherings among ironmasters and their managers. Nearby, about 2,000 feet of canal earthworks and the ruins of Locks #4 and #5 survive from the Bald Eagle and Spring Creek Navigation Company canal, built to link Bellefonte with the West Branch Division of the Pennsylvania Canal. The nomination considers the site important for both its industrial and architectural history.
Significance in brief: The nomination argues the mansion is a landmark of the charcoal iron industry in central Pennsylvania and a surviving ironmasters' house from the Milesburg Iron Works, which operated from 1795 into the early 20th century. It also cites the c. 1850 Gothic vergeboard trim as a rare local example of Gothic influence on domestic architecture, and the canal earthworks and locks as the most visible reminder of the canal in Centre County.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 79002183, listed October 16, 1979. Summary generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29, confidence medium).
Key facts
| Address | S of Milesburg on PA 144 , Boggs Township, Milesburg |
|---|---|
| County | Centre County |
| Listed | October 16, 1979 |
| Reference number | 79002183 |
| Resource type | Building |
| Period of significance | 1800-1899 |
| Architectural style | Gothic (c. 1850 remodeling); Georgian Revival (front entrance treatment) |
| Areas of significance | Industry, Commerce, Transportation, Architecture |
| Level of significance | Local |
| Status (as stated in the nomination) | Standing in excellent condition according to the nomination; the canal ruins are described as deteriorated in places. |
| Acreage | 32 |
| Coordinates | 40.93365, -77.78593 (NPS GIS) |
What listing means for this property
National Register listing is honorary for a privately owned home: it does not by itself restrict what an owner may do with their own money, and it does not require public access. Restrictions come from local landmark or historic-district ordinances, which are separate (how they differ).
Owner-occupied houses are not eligible for the 20% federal rehabilitation tax credit, which applies to income-producing buildings, but many states offer credits for homeowners. Listing also opens the door to preservation easements and to buying a plaque. Start with what listing means for homeowners, renovating a listed house and selling one.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 79002183.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q5659491
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.