{"nrhp_refnum":"06001017","name":"Cook County Hospital Administration Building","other_names":["Main Building","Cook County Hospital"],"category":"building","location":{"address":"1835 W. Harrison St.","address_restricted":false,"city":"Chicago","county":"Cook County","state":"IL","lat":41.875841335000075,"lon":-87.67283474799996,"geom_source":"nps_gis"},"listed_date":"2006-11-08","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Health/Medicine","Education","Architecture","Social History"],"significance_levels":["national"],"summary":{"what_it_is":"A Beaux-Arts hospital administration building at 1835 West Harrison Street in Chicago, about two miles west of downtown, built 1912-1914 and opened in late 1914 as the main building of Cook County Hospital.","why_significant":"The form describes the building as the centerpiece of the county's large public hospital complex, designed by county architect Paul Gerhardt with Eric Hall completing the first stage. Its Beaux-Arts design and its role in public health care in Chicago are central to the case for significance. The excerpt does not include the full statement of significance, so the exact criteria and period are not shown.","narrative":"Cook County Hospital's Administration Building, also called the Main Building, sits at 1835 West Harrison Street in Chicago's Illinois Medical District, roughly two miles west of downtown. Construction ran from 1912 to 1914, and the hospital opened in late 1914. Paul Gerhardt designed it in the Beaux-Arts style, with a granite, brick and terra cotta exterior on a concrete foundation. The north facade has a two-story base, a midsection of three-story engaged Ionic columns, and an eighth-story crown. Its outer-facing sections project forward, which reverses the usual Beaux-Arts arrangement. Six-story pavilions were added to the south between 1914 and 1917, followed by a Receiving Building and later additions. The large cornice was removed in 1960. The hospital closed in December 2002 when a new county medical center opened next door. The County Board declined to approve demolition of the Administration Building, though it agreed to remove the pavilions and Receiving Building.","period_of_significance":null,"architect_builder":"Paul Gerhardt (architect); Eric Hall (county architect who completed the first stage of the project)","architectural_style":"Late 19th & 20th Century Revivals: Beaux-Arts","criteria":[],"status_note":"The hospital closed in December 2002 after a new county medical center opened nearby. The form lists current function as vacant/not in use. The County Board refused to approve demolition of the Administration Building but agreed in November 2005 to demolish the pavilions and Receiving Building.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:37.405833-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/23/8926/28892623/content/electronic-records/rg-079/NPS_IL/06001017.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/06001017/8eeda48daf-800.webp","url_1600":"https://nationalhistoricalregister.com/media/06001017/8eeda48daf-1600.webp","licence":"CC BY-SA 4.0","author":"Jeff Dahl","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Cook_County_Hospital.jpg\" rel=\"noopener\">Jeff Dahl</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Cook_County_Hospital.jpg"},"district":{"nrhp_refnum":"12000040","name":"Chicago Park Boulevard System Historic District","url":"https://nationalhistoricalregister.com/districts/illinois/chicago-park-boulevard-system-historic-district-12000040/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28892623","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q123296694"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/cook-county/cook-county-hospital-administration-building-06001017/"}