{"nrhp_refnum":"99001378","name":"One LaSalle Street Building","other_names":["One North LaSalle"],"category":"building","location":{"address":"1 N LaSalle St.","address_restricted":false,"city":"Chicago","county":"Cook County","state":"IL","lat":41.882080150000036,"lon":-87.63218698799994,"geom_source":"nps_gis"},"listed_date":"1999-11-22","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A 49-story Art Deco skyscraper at One North LaSalle Street, at the northeast corner of Madison and LaSalle streets in Chicago's Loop financial district, completed in May 1930 to designs by K.M. Vitzhum & Company.","why_significant":"The building is presented as a prime example of Chicago's Art Deco skyscrapers, with an integrated, setback massing shaped by the city's 1923 zoning law. It was the tallest building in the city by habitable floors when completed. The exterior ornament and the lavish Art Deco lobby survive with a high degree of integrity.","narrative":"Rising forty-nine stories at the northeast corner of Madison and LaSalle streets, One LaSalle Street Building is an Art Deco office tower in the center of Chicago's Loop financial district. Completed in May 1930, six months after the stock market crash, it was the city's tallest building by habitable floors. K.M. Vitzhum & Company designed the steel-framed structure, which is clad in limestone and granite with dark terra cotta spandrels. A five-story base carries a central tower that telescopes upward through setbacks, flanked by wings that make the tower appear to grow from them, a massing encouraged by the 1923 zoning law. Carved panels, a four-story limestone entrance surround and bronze doors provide the exterior ornament. Inside, the lobby is among the city's most lavish Art Deco interiors, with green marble, cast bronze elevator doors, bird-shaped lamps and a patterned marble floor. Despite changes to bank spaces and upper offices, the building keeps a high degree of integrity.","period_of_significance":null,"architect_builder":"K.M. Vitzhum & Company","architectural_style":"Skyscraper; Art Deco","criteria":[],"status_note":"Still in commercial/business use; the exterior and lobby retain a high degree of integrity, though upper-floor offices and the first and second floor bank spaces have been altered.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:37.019824-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/29/8921/28892129/content/electronic-records/rg-079/NPS_IL/99001378.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/99001378/7466b047d5-800.webp","url_1600":"https://nationalhistoricalregister.com/media/99001378/7466b047d5-1600.webp","licence":"CC BY-SA 3.0","author":"TonyTheTiger","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:20120929_One_North_LaSalle.JPG\" rel=\"noopener\">TonyTheTiger</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:20120929_One_North_LaSalle.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28892129","wikipedia":"https://en.wikipedia.org/wiki/One_North_LaSalle","wikidata":"https://www.wikidata.org/wiki/Q2565075"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/cook-county/one-lasalle-street-building-99001378/"}