{"nrhp_refnum":"77000483","name":"River Forest Historic District","other_names":["See Also:70000241","70000242"],"category":"building","location":{"address":"Between Harlem Ave. and Des Plaines River with 2 extensions N of Chicago Ave. and 2 extensions S of Lake St.","address_restricted":false,"city":"River Forest","county":"Cook County","state":"IL","lat":41.89188418550003,"lon":-87.8193505260366,"geom_source":"nps_gis"},"listed_date":"1977-08-26","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"A large residential historic district covering most of the Village of River Forest, Cook County, Illinois, between Harlem Avenue, Chicago Avenue, Lake Street and the Des Plaines River, with extensions north of Chicago Avenue and south of Lake Street. It covers about 356 acres and roughly 830 structures.","why_significant":"The district is significant mainly for its architecture, especially works by Frank Lloyd Wright and other Prairie School designers, which together with neighboring Oak Park make it a primary area for studying these innovations. It also contains fine Italianate, Medieval Revival and Classical Revival buildings. Its history as a railroad-era suburb of Chicago adds to its importance.","narrative":"River Forest Historic District takes in most of a western suburb of Chicago, running from Harlem Avenue to the Des Plaines River between Chicago Avenue and Lake Street, with extensions to the north and south. About 830 structures stand within it, nearly all single-family houses on tree-lined streets, and 165 were judged especially important. The district is best known for its Prairie School architecture. Frank Lloyd Wright designed several buildings here, including the early Winslow and Williams houses and the River Forest Tennis Club. Guenzel and Drummond, Tallmadge and Watson, Purcell and Elmslie, John Van Bergen and others also left work. The 700 block of William Street is notable as an entire street of moderate-cost Prairie School housing. Earlier Italianate houses date from 1858 onward, and later Medieval and Classical revival buildings are well represented. The area grew after the railroad arrived in 1848 and the village incorporated in 1880. It developed as an almost purely residential suburb, and its architecture reflects that long, steady growth.","period_of_significance":null,"architect_builder":"Frank Lloyd Wright; Guenzel and Drummond; Tallmadge and Watson; Purcell and Elmslie; John Van Bergen; Harry Robinson; Spencer and Powers; E.E. Roberts; C.E. White, Jr.; Harry H. Mahler","architectural_style":"Prairie School (Early Modern), with Italianate, Queen Anne, Arts and Crafts, Medieval and Classical revival styles","criteria":[],"status_note":"Condition is marked excellent; land use is overwhelmingly residential, with about 76 recent intrusive structures (roughly 9%).","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:35.911626-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/90/8920/28892090/content/electronic-records/rg-079/NPS_IL/77000483.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28892090","wikipedia":"https://en.wikipedia.org/wiki/River_Forest_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q97574279"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/cook-county/river-forest-historic-district-77000483/"}