{"nrhp_refnum":"99000877","name":"Warren Historic District","other_names":[],"category":"district","location":{"address":"Roughly bounded by Comewango Cr., the Allegheny R., 7th Ave. and Laurel St.","address_restricted":false,"city":"Warren","county":"Warren County","state":"PA","lat":41.852776634000065,"lon":-79.14701598822361,"geom_source":"nps_gis"},"listed_date":"1999-07-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Industry","Commerce","Politics/Government"],"significance_levels":["state"],"summary":{"what_it_is":"The Warren Historic District is a district of about 627 resources in the City of Warren, Warren County, northwestern Pennsylvania, lying west of the Conewango Creek and north of the Allegheny River. It is a mix of commercial blocks, residential neighborhoods, churches, a school and small parks, laid out on an 1795 grid plan.","why_significant":"The nomination argues the district is significant for industry and commerce, reflecting the lumber and oil booms of the nineteenth century, and for architecture, with Greek Revival and later Victorian buildings. It also cites the town's 1795 layout and its role as county seat as reasons for significance under government. The district contains 595 contributing resources, about 94% of the total.","narrative":"Warren is a city of roughly 11,000 people on the Allegheny River in northwestern Pennsylvania, and its historic district covers the town's original 1795 grid and the streets that grew from it. Surveyors under General William Irvine and Colonel Andrew Ellicott laid out the town that year, with a central square at Market and High Streets, and the first courthouse was built on that square after Warren became county seat in 1819. Early houses from the 1820s and 1830s show Greek Revival detailing, including the 1832 Offerle-Patchen house and the 1830 Jackson-Sill house on Liberty Street. Lumber and then oil brought growth after 1875, when David Beaty struck oil east of the Conewango Creek. Masonry commercial blocks and Victorian houses from that boom define the downtown and surrounding neighborhoods.","period_of_significance":"1820-1945","architect_builder":"Phillips, Edward Albert; Wetmore, Charles D.; Bell, William; Albert Joseph Bodker, Inc.; Beebe, M.E.; Warren & Wetmore; Marston, Charles; Gruninger, Frank","architectural_style":"Greek Revival; Italianate; Second Empire; Queen Anne; Colonial Revival; Four-Square; Bungalow/Craftsman","criteria":["A","C"],"status_note":null,"vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:36.773531-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/99000877.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/99000877/0bc85f6820-800.webp","url_1600":"https://nationalhistoricalregister.com/media/99000877/0bc85f6820-1600.webp","licence":"CC BY 2.0","author":"Nicholas from Pennsylvania, USA","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Warren_Pennsylvania.jpg\" rel=\"noopener\">Nicholas from Pennsylvania, USA</a>, <a href=\"https://creativecommons.org/licenses/by/2.0\" rel=\"license noopener\">CC BY 2.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Warren_Pennsylvania.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71993971","wikipedia":"https://en.wikipedia.org/wiki/Warren_Historic_District_(Warren,_Pennsylvania)","wikidata":"https://www.wikidata.org/wiki/Q7970270"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/warren-county/warren-historic-district-99000877/"}