{"nrhp_refnum":"82002242","name":"Ontario State Bank Block","other_names":["The Grand Palace Pavilion of Antiques"],"category":"building","location":{"address":"300 S. Euclid Ave.","address_restricted":false,"city":"Ontario","county":"San Bernardino County","state":"CA","lat":34.06159020300004,"lon":-117.65137974199996,"geom_source":"nps_gis"},"listed_date":"1982-01-08","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Architecture","Invention"],"significance_levels":["state"],"summary":{"what_it_is":"A two-story, ell-shaped red brick commercial building at 300 South Euclid Avenue in Ontario, San Bernardino County, California, built in 1887 in three consecutive units, of which the third has since been removed.","why_significant":"The nomination cites architecture, commerce and invention. The building represents Ontario's 1880s boom era and combines Queen Anne and Eastlake elements. It housed Ontario's first bank and first newspaper. E.H. Richardson developed the Hotpoint electric flat iron there, which helped lead to Ontario being called the Iron Center of the World.","narrative":"Built in 1887 at 300 South Euclid Avenue, the Ontario State Bank Block is a two-story, ell-shaped red brick commercial building with wood cornices, brackets and pilasters. It was erected in three consecutive units, though the third has since been removed. Its design mixes Queen Anne features, such as turrets, gables, oriel windows and corbeled brickwork, with Eastlake carved wood detailing. The building recalls the 1880s land boom that shaped early Ontario. It quickly became the town's business center, housing Ontario's first bank, its first newspaper and many merchants. In 1903 engineer E.H. Richardson moved into one of its shops and developed an electric flat iron, forming the Pacific Electric Heating Company in 1904 and receiving a patent for the Hotpoint iron in 1906. The company's success contributed to Ontario's nickname as the Iron Center of the World. Despite lost decorative pediments, structural cracking and worn porches, the building still retains recognizable character.","period_of_significance":"1887","architect_builder":"Architect George Fyfe (a diagram also notes \"Max Erskies?\")","architectural_style":"Queen Anne and Eastlake","criteria":["A","B","C"],"status_note":"Deteriorated and altered: shear cracks in the brick walls, deteriorated rear porches, and decorative pediments and oriel windows removed. The roof was replaced in 1977. The form says restoration is needed.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:31.713587-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/82002242.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/82002242/b0fd891254-800.webp","url_1600":"https://nationalhistoricalregister.com/media/82002242/b0fd891254-1600.webp","licence":"Public domain","author":"Stephen Hammond, California Department of Transportation","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Ontario_State_Bank_Block_nom1_-_Ontario_California.jpg\" rel=\"noopener\">Stephen Hammond, California Department of Transportation</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Ontario_State_Bank_Block_nom1_-_Ontario_California.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123860783","wikipedia":"https://en.wikipedia.org/wiki/Ontario_State_Bank_Block","wikidata":"https://www.wikidata.org/wiki/Q20713427"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/san-bernardino-county/ontario-state-bank-block-82002242/"}