{"nrhp_refnum":"78001173","name":"Gundlach-Grosse House","other_names":[],"category":"building","location":{"address":"625 N. Main St.","address_restricted":false,"city":"Columbia","county":"Monroe County","state":"IL","lat":38.448252998000044,"lon":-90.20512228999996,"geom_source":"nps_gis"},"listed_date":"1978-12-18","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"A one-and-a-half-story painted brick residence at 625 North Main Street in Columbia, Monroe County, Illinois, built in 1856-57 as a two-family house for brothers John and Philip Peter Gundlach.","why_significant":"The nomination presents it as an exceptional example of the Greek Revival houses German settlers built in Illinois, with decorative corbeled brickwork typical of German masons. It is also tied to local figures, including John Gundlach, a Columbia trustee and mayor, and to the Gundlach brewery and the Grosse family's Buck Tavern.","narrative":"Built in 1856-57 at 625 North Main Street in Columbia, Illinois, this hand-pressed brick house was designed as a double dwelling for brothers John and Philip Peter Gundlach and their families. It has a central hall plan repeated on each floor, a classically detailed entry with cast iron pilasters and Ionic columns, cast iron lintels with scroll pediments, and a corbeled brick frieze. A brick outbuilding, thought to be a former smokehouse, stands behind it. The house is described as an exceptional example of the Greek Revival homes German settlers built in Illinois, where masons often added brick ornament. John Gundlach served as a town trustee and as Columbia's third mayor, and the brothers owned the Monroe Brewery. In 1873 the house was sold to Ernst Grosse, who ran the Buck Tavern, and his family lived there until about 1950. Apart from rear additions, the house retains its original exterior, interior plan and woodwork.","period_of_significance":"1857","architect_builder":"Hill (?) - reportedly built by a Mr. Hill","architectural_style":"Greek Revival (German settler adaptation)","criteria":[],"status_note":"Listed condition is excellent and the building is altered but on its original site; the form records rear additions and restorative work around 1950.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:34.562532-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/43/8937/28893743/content/electronic-records/rg-079/NPS_IL/78001173.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/78001173/53dc15bfcc-800.webp","url_1600":"https://nationalhistoricalregister.com/media/78001173/53dc15bfcc-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Gundlach-Grosse_House.jpg\" rel=\"noopener\">Nyttend</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Gundlach-Grosse_House.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28893743","wikipedia":"https://en.wikipedia.org/wiki/Gundlach-Grosse_House","wikidata":"https://www.wikidata.org/wiki/Q16891953"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/monroe-county/gundlach-grosse-house-78001173/"}