{"nrhp_refnum":"66000224","name":"Cabrillo National Monument","other_names":[],"category":"district","location":{"address":"10 mi. from San Diego off U.S. 10, near S tip of Point Loma","address_restricted":false,"city":"San Diego","county":"San Diego County","state":"CA","lat":32.66987473800006,"lon":-117.24094144772874,"geom_source":"nps_gis"},"listed_date":"1966-10-15","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Exploration/Settlement","Conservation","Architecture"],"significance_levels":["national","state","local"],"summary":{"what_it_is":"A roughly 144-acre federally owned district at the south end of Point Loma in San Diego, California, containing the Old Point Loma Lighthouse (built 1854) and a set of Army harbor-defense structures from World War I and World War II that were once part of Fort Rosecrans.","why_significant":"The nomination documents the resources within the monument. Most relate to the role of Point Loma in the harbor defenses of San Diego, including fire control stations, searchlight shelters, a radio station, and gun batteries. The monument was also designated to commemorate Juan Rodriguez Cabrillo's voyage and his discovery of San Diego Bay, and the 1854 lighthouse predates the military use.","narrative":"Cabrillo National Monument covers about 144 acres near the south end of Point Loma in San Diego, rising to 422 feet at the peninsula's highest point. It was first designated to commemorate Juan Rodriguez Cabrillo's voyage and his discovery of San Diego Bay. The land was formerly part of Fort Rosecrans, headquarters of the harbor defenses of San Diego, and most of its historic resources reflect that military role. These include a 1918 radio station, concrete fire control stations used to aim coastal guns, searchlight shelters and a generator plant built in 1918-1919, the World War II Battery Bluff and Battery Point Loma, and the Bayside Trail, originally an Army road. The Old Point Loma Lighthouse, built of sandstone in 1854 and first lit in 1855, predates the military presence but was also used during both world wars. The district has 26 contributing and 8 noncontributing resources. Some structures have been sealed because of vandalism.","period_of_significance":null,"architect_builder":null,"architectural_style":"Other: Military; Late 19th and 20th Century Revivals","criteria":[],"status_note":"Several structures are sealed or filled in because of vandalism, and their interior condition is unknown. The radio station is used for storage. The Bayside Trail is closed to ordinary vehicle traffic.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:31.806349-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/66000224.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/66000224/05f18bdd9a-800.webp","url_1600":"https://nationalhistoricalregister.com/media/66000224/05f18bdd9a-1600.webp","licence":"CC BY-SA 2.0","author":"Eric Kilby","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Cabrillo_National_Monument_in_San_Diego_2015.jpg\" rel=\"noopener\">Eric Kilby</a>, <a href=\"https://creativecommons.org/licenses/by-sa/2.0\" rel=\"license noopener\">CC BY-SA 2.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Cabrillo_National_Monument_in_San_Diego_2015.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123860829","wikipedia":"https://en.wikipedia.org/wiki/Cabrillo_National_Monument","wikidata":"https://www.wikidata.org/wiki/Q1024971"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/san-diego-county/cabrillo-national-monument-66000224/"}