{"nrhp_refnum":"69000157","name":"Fort Mifflin Hospital","other_names":["Old Fort Mifflin Mess Building"],"category":"building","location":{"address":"Marina and Penrose Ferry Rds.","address_restricted":false,"city":"Philadelphia","county":"Philadelphia","state":"PA","lat":39.876219254000034,"lon":-75.21129315299999,"geom_source":"nps_gis"},"listed_date":"1969-09-29","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Military","Engineering","Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"A 2-story brick building known in drawings and reports as the \"mess building,\" located within the Fort Mifflin complex in Philadelphia, Pennsylvania. The form states it was constructed prior to 1802.","why_significant":"The nomination identifies the building as part of the adjoining Fort Mifflin complex and refers to a separate attached sheet describing that complex. The form marks Military, Engineering and Historic areas of significance. The building retains original double-hung sash and window glass, which the form describes as the only such original sash in the fort complex.","narrative":"Built before 1802, the two-storey brick building known as the mess building stands within the Fort Mifflin complex on the Delaware River in Philadelphia. It measures 40 by 110 feet, has a gabled roof, and has galleries along its east elevation. Its original double-hung window sash and window glass remain under the galleries on both floors. Four of these sash survive, and the form notes they are the only original double-hung sash in the entire fort complex. The building is regarded as part of the larger fort, whose military history spans the late eighteenth and nineteenth centuries. Its surviving original fabric, including the window glass, is the main reason it is significant, and its condition is recorded as deteriorated.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Condition is marked Deteriorated; integrity is marked Original Site.","vacant_flag":null,"machine_generated":true,"model":"claude-haiku-5-5","prompt_version":"v1.1-2026-10-29","generated_at":"2026-10-29 17:11:30.850658-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_PA/69000157.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/69000157/9585614c81-800.webp","url_1600":"https://nationalhistoricalregister.com/media/69000157/9585614c81-1600.webp","licence":"CC BY-SA 3.0","author":"Frederikto","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Fort_Mifflin_Hospital.jpg\" rel=\"noopener\">Frederikto</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:Fort_Mifflin_Hospital.jpg"},"district":{"nrhp_refnum":"70000554","name":"Fort Mifflin","url":"https://nationalhistoricalregister.com/districts/pennsylvania/fort-mifflin-70000554/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71996922","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q139766837"},"indexable":true,"url":"https://nationalhistoricalregister.com/pennsylvania/philadelphia/fort-mifflin-hospital-69000157/"}