{"nrhp_refnum":"79002183","name":"Harmony Forge Mansion","other_names":[],"category":"building","location":{"address":"S of Milesburg on PA 144 , Boggs Township","address_restricted":false,"city":"Milesburg","county":"Centre County","state":"PA","lat":40.93365237100005,"lon":-77.78593359513371,"geom_source":"nps_gis"},"listed_date":"1979-10-16","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Commerce","Transportation","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story-plus-attic stone house on the Harmony Forge property at Milesburg, Centre County, Pennsylvania, with a stone kitchen wing, several outbuildings and a surviving stretch of the Bald Eagle and Spring Creek Navigation Company canal. The mansion is dated by the nomination to c. 1810-20, though the document says this is not proven.","why_significant":"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.","narrative":"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.","period_of_significance":"1800-1899","architect_builder":null,"architectural_style":"Gothic (c. 1850 remodeling); Georgian Revival (front entrance treatment)","criteria":[],"status_note":"Standing in excellent condition according to the nomination; the canal ruins are described as deteriorated in places.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:30.51345-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/79002183.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/79002183/c0b3f2675c-800.webp","url_1600":"https://nationalhistoricalregister.com/media/79002183/c0b3f2675c-1600.webp","licence":"Public domain","author":"Pubdog","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Harmony_Forge_Mansion_Dec_12.jpg\" rel=\"noopener\">Pubdog</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Harmony_Forge_Mansion_Dec_12.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71996543","wikipedia":"https://en.wikipedia.org/wiki/Harmony_Forge_Mansion","wikidata":"https://www.wikidata.org/wiki/Q5659491"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/centre-county/harmony-forge-mansion-79002183/"}