{"nrhp_refnum":"01001116","name":"Monongahela Cemetery","other_names":["Momongahela Cemetery and St. Mary's Cemetery"],"category":"site","location":{"address":"Cemetery Hill Rd. at Gregg St.","address_restricted":false,"city":"Monongahela City","county":"Washington County","state":"PA","lat":40.194651523500056,"lon":-79.92214236947562,"geom_source":"nps_gis"},"listed_date":"2001-10-14","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Landscape Architecture","Architecture","Art"],"significance_levels":["local"],"summary":{"what_it_is":"Monongahela Cemetery is a large park-like cemetery of about 100 acres within its nominated boundary, located near the center of Monongahela City in eastern Washington County, Pennsylvania. It combines an 1863 rural cemetery plan and a 1915 lawn park addition.","why_significant":"The nomination argues the cemetery is significant for its landscape design, which reflects two distinct cemetery traditions by notable designers, John Chislett and Hare and Hare. It also cites carvings by a locally important marble cutter and several statues, and the community history reflected in its burials and monuments.","narrative":"Monongahela Cemetery occupies a wooded hillside near the center of Monongahela City, on the Monongahela River in Washington County. It was established in 1863 on thirty-two acres bought from a local farmer, laid out in the rural cemetery style by John Chislett, the first formally trained architect of importance in Pittsburgh. In 1915 Hare and Hare of Kansas City added a lawn park section of about sixty acres to the south, with open vistas and winding roads. The grounds hold roughly 20,000 burials, a rock-faced retaining wall with cannons marking a Civil War veterans plot, a Valiani family burial wall from 1918, and marble monuments by the local firm R.M. Gee and Sons. The cemetery is valued for its landscape design and for the record it preserves of the city's growth and ethnic diversity.","period_of_significance":"1863-1950","architect_builder":"John Chislett (architect/landscape architect); Hare & Hare (landscape architects); Frank P. Keller (architect, 1894 chapel)","architectural_style":"Gothic Revival","criteria":["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 17:11:37.924555-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/01001116.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/01001116/b46112bdaa-800.webp","url_1600":"https://nationalhistoricalregister.com/media/01001116/b46112bdaa-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Monongahela_Cemetery_chapel.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Monongahela_Cemetery_chapel.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71996590","wikipedia":"https://en.wikipedia.org/wiki/Monongahela_Cemetery","wikidata":"https://www.wikidata.org/wiki/Q6901789"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/washington-county/monongahela-cemetery-01001116/"}