{"nrhp_refnum":"86002643","name":"Allegheny High School","other_names":["Allegheny Middle School"],"category":"building","location":{"address":"810 Arch St.","address_restricted":false,"city":"Pittsburgh","county":"Allegheny County","state":"PA","lat":40.45308286100004,"lon":-80.00868977399995,"geom_source":"nps_gis"},"listed_date":"1986-09-30","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Education","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"Allegheny High School is a school complex of two joined buildings at 810 Arch Street in Pittsburgh, Allegheny County, Pennsylvania, on the edge of Allegheny Commons Park. The 1904 annex and the 1936 Art Deco annex were designed by Frederick J. Osterling and Marion M. Steen respectively, and the school is now known as Allegheny Middle School.","why_significant":"The nomination argues the school is significant for education and architecture. It was the first high school in Allegheny City, and its 1904 building was notable for its simple massing and stone entry, which were unprecedented in the city. The 1936 annex is cited as an example of Marion M. Steen's Art Deco styling, including its auditorium interior.","narrative":"Built along Arch Street beside Allegheny Commons Park, the complex joins two school buildings. The four-story 1904 annex, designed by Frederick J. Osterling, has Classical ornament, a pedimented hip roof with an ocular window, modillioned cornices, and a central entry with stone piers and a rounded-arch doorway under a pink granite foundation. The buff brick 1936 annex by Marion M. Steen and the Board of Education staff has a twelve-bay central classroom block, gymnasium and auditorium pavilions, and a wave-motif band above its stone ground floor. Its 950-seat auditorium has a coffered ceiling, colored tile, and geometric ornament. The school began as a college preparatory school, was used after World War I as a trade-training center for disabled soldiers, and was bought by the Pittsburgh Board of Education in 1923. It was renamed Allegheny Vocational High School in 1930 and became a middle school in 1984.","period_of_significance":"1901-1920;1921-1940","architect_builder":"F.J. Osterling (architect); Marion M. Steen (architect)","architectural_style":"Classical Revival; Art Deco","criteria":[],"status_note":"Described as a middle school as of 1984; the present use is listed as school.","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:34.3222-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/86002643.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/86002643/6470bc7e7e-800.webp","url_1600":"https://nationalhistoricalregister.com/media/86002643/6470bc7e7e-1600.webp","licence":"CC BY-SA 3.0","author":"Aij","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Allegheny_High_School.jpg\" rel=\"noopener\">Aij</a>, <a href=\"https://creativecommons.org/licenses/by-sa/3.0\" rel=\"license noopener\">CC BY-SA 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Allegheny_High_School.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71992192","wikipedia":"https://en.wikipedia.org/wiki/Allegheny_High_School","wikidata":"https://www.wikidata.org/wiki/Q4731307"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/allegheny-county/allegheny-high-school-86002643/"}