{"nrhp_refnum":"82002249","name":"Pioneer Woolen Mills and D. Ghirardelli Company","other_names":["Ghirardelli Square"],"category":"building","location":{"address":"900 N. Point St.","address_restricted":false,"city":"San Francisco","county":"San Francisco","state":"CA","lat":37.805632012000046,"lon":-122.42287724399995,"geom_source":"nps_gis"},"listed_date":"1982-04-29","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Landscape Architecture","Commerce","Art","Conservation","Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"A full city block at 900 North Point Street in San Francisco, containing red brick buildings from a woolen mill (1858-1889), the D. Ghirardelli chocolate factory (1893-1960s), and the Ghirardelli Square retail complex (1962 onward).","why_significant":"The block shows three phases of use: the West Coast's first woolen mill, a coordinated chocolate factory complex designed by William S. Mooser Sr., and an early, widely praised adaptive reuse as shops and restaurants with landscaping by Lawrence Halprin. The nomination stresses the unified red brick and white concrete design, the site planning that took advantage of the sloping ground, and the national and international acclaim for Ghirardelli Square.","narrative":"Ghirardelli Square occupies an entire San Francisco block at 900 North Point Street and preserves three layers of local industrial and commercial history. In 1858 the site received the first woolen mill on the West Coast, replaced after a fire in 1861 by a brick mill designed by William S. Mooser. In 1893 the sons of Domingo Ghirardelli bought the mill and the block to expand their chocolate business. Between 1900 and 1923, William S. Mooser Sr. designed a group of red brick buildings trimmed in white cast concrete, including the Cocoa, Chocolate, Mustard and Power House buildings, placed to follow the sloping site and open to bay views. A large rooftop Ghirardelli sign dates from about 1915. Beginning in 1962, the complex was converted to shops, restaurants and a theater by Wurster, Bernardi & Emmons, with plazas, planting and a fountain by Lawrence Halprin and Ruth Asawa. Street facades remain largely intact, and the project's early adaptive reuse drew wide acclaim.","period_of_significance":null,"architect_builder":"William S. Mooser (woolen mill); William S. Mooser, Senior (Ghirardelli buildings); Wurster, Bernardi & Emmons (1960s conversion); Lawrence Halprin (landscape)","architectural_style":null,"criteria":[],"status_note":"Occupied and in use as Ghirardelli Square, with shops, restaurants, a theater and landscaped plazas; condition rated excellent and altered.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:31.146895-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/82002249.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/82002249/7cc4fa09d8-800.webp","url_1600":"https://nationalhistoricalregister.com/media/82002249/7cc4fa09d8-1600.webp","licence":"CC BY-SA 3.0","author":"Ryan U","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Ghirardelli_Square_Sign.JPG\" rel=\"noopener\">Ryan U</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:Ghirardelli_Square_Sign.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123861254","wikipedia":"https://en.wikipedia.org/wiki/Ghirardelli_Square","wikidata":"https://www.wikidata.org/wiki/Q5556730"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/san-francisco/pioneer-woolen-mills-and-d-ghirardelli-company-82002249/"}