{"nrhp_refnum":"94000045","name":"US Naval Air Station Sunnyvale, California, Historic District","other_names":["US Naval Air Station Moffett Field Central Historic District"],"category":"district","location":{"address":"Naval Air Station Moffett Field","address_restricted":false,"city":"Sunnyvale","county":"Santa Clara County","state":"CA","lat":37.413769666000036,"lon":-122.04951664069694,"geom_source":"nps_gis"},"listed_date":"1994-02-24","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Engineering","Military","Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"A naval air station historic district at Moffett Field in Sunnyvale, Santa Clara County, California, covering about 124 acres. It centers on the 1933 base plan designed by the Navy Bureau of Yards and Docks, plus two separate WWII blimp hangars.","why_significant":"The district is the core of a west coast airship base created largely through the efforts of Admiral William A. Moffett. It combines a unified Spanish Colonial Revival campus with Hangar #1, a Streamline Moderne dirigible hangar recognized as an engineering landmark. Hangars #2 and #3 add to the lighter-than-air story.","narrative":"Moffett Field's central district in Sunnyvale is a naval air station campus laid out in 1933 on former bay lowlands. Its buildings, designed by the Navy Bureau of Yards and Docks, are mostly two-story white stucco structures with low Spanish tile roofs, including the Administration Building, Bachelor Officers' Quarters, aircraft tower and a cluster of officers' residences along Berry Drive. Mature trees, lawns and an entry gate unify the grounds. Dominating the site is Hangar #1, a metal-sheathed Streamline Moderne structure about 1,140 feet long, built in 1932 to house the dirigible USS Macon. Two large redwood-frame blimp hangars, built in 1943, stand to the east and are included as a detached area. The district reflects the vision of Admiral William A. Moffett, who promoted helium-filled airships for naval patrol and helped bring a west coast airship base to northern California. Hangar #1 has been recognized as an engineering landmark by the American Society of Civil Engineers.","period_of_significance":null,"architect_builder":"Navy Department, Bureau of Yards and Docks","architectural_style":"Late 19th and 20th Century Revivals: Mission/Spanish Colonial Revival; Other: Dirigible Hangar; WW II Blimp Hangar","criteria":[],"status_note":"Still used as a naval facility and air facility, with well-kept landscaping.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:54:26.823692-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_CA/94000045.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/123861812","wikipedia":"https://en.wikipedia.org/wiki/Shenandoah_Plaza_National_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q7494170"},"indexable":true,"url":"https://nationalhistoricalregister.com/california/santa-clara-county/us-naval-air-station-sunnyvale-california-historic-district-94000045/"}