{"nrhp_refnum":"78002351","name":"Highland Hall","other_names":["Courthouse Annex"],"category":"building","location":{"address":"517 Walnut St.","address_restricted":false,"city":"Hollidaysburg","county":"Blair County","state":"PA","lat":40.432057007000026,"lon":-78.39205489099999,"geom_source":"nps_gis"},"listed_date":"1978-09-13","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Education","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"Highland Hall is a four-story stone T-shaped former school building on a small knoll at 517 Walnut Street in Hollidaysburg, Blair County, Pennsylvania, with about four acres of landscaped grounds. It was built about 1865 to 1868 as the Hollidaysburg Male and Female Seminary and is now used as a county office building.","why_significant":"The nomination argues the building is significant for its architecture, as the work of the Philadelphia architect Samuel Sloan, and for its educational history as a private school and seminary. It also cites its role in training military radio operators during World War II and its landscaped setting, which it describes as one of the finest sites in the county.","narrative":"Built of squared coursed stone on a small knoll in Hollidaysburg, Highland Hall is a four-story T-shaped building with a central gabled section, an octagonal cupola, and mansard-roofed wings. Work began in 1865 for the Hollidaysburg Male and Female Seminary Association, and the building was completed in stages, with the west wing occupied in November 1868. Philadelphia architect Samuel Sloan was chosen to design it, and Daniel K. Reamey served as master builder. The school operated as a girls' school until 1940. During World War II, Keystone Radio Schools leased the building to train military radio operators, including soldiers, sailors, and members of the Women's Army Corps, around the clock. Franciscan religious orders later used it as a preparatory seminary. In 1969 Blair County acquired the building for use as a county office building. The nomination values its architecture and its landscaped grounds.","period_of_significance":"1815-1884","architect_builder":"Samuel Sloan (architect); Daniel K. Reamey (master builder)","architectural_style":null,"criteria":["A","C"],"status_note":"Now used as a county office building","vacant_flag":false,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:30.465695-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/78002351.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/78002351/7f5f73d7a0-800.webp","url_1600":"https://nationalhistoricalregister.com/media/78002351/7f5f73d7a0-1600.webp","licence":"Public domain","author":"Pubdog (talk)","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Highland_Hall_Hollidaysburg_PA_Apr_10.JPG\" rel=\"noopener\">Pubdog (talk)</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Highland_Hall_Hollidaysburg_PA_Apr_10.JPG"},"district":{"nrhp_refnum":"85003158","name":"Hollidaysburg Historic District","url":"https://nationalhistoricalregister.com/districts/pennsylvania/hollidaysburg-historic-district-85003158/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71995888","wikipedia":"https://en.wikipedia.org/wiki/Highland_Hall_(Hollidaysburg,_Pennsylvania)","wikidata":"https://www.wikidata.org/wiki/Q5758781"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/blair-county/highland-hall-78002351/"}