{"nrhp_refnum":"76001234","name":"Old Westbury Gardens","other_names":["Phipps,John S.,Estate","Westbury House"],"category":"building","location":{"address":"71 Old Westbury Rd.","address_restricted":false,"city":"Westbury","county":"Nassau County","state":"NY","lat":40.77405844350005,"lon":-73.59636657722186,"geom_source":"nps_gis"},"listed_date":"1976-11-08","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Landscape Architecture","Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"A 100-acre country estate in Old Westbury, Nassau County, New York, centered on \"Westbury House,\" a brick manorial mansion built in 1906 for John S. Phipps and surrounded by landscaped gardens.","why_significant":"The nomination calls it an outstanding surviving example of the Long Island \"Gold Coast\" country estates, with a high-style manorial residence designed by English architect George A. Crawley. It is also a rare American example of imposing English manor house architecture, with largely unaltered interiors and mature gardens. The form also notes its link to John S. Phipps and the social life of the Jazz Age.","narrative":"Westbury House, a two and one-half-story brick mansion completed in 1906 for financier's son John S. Phipps, anchors a 100-acre estate in Old Westbury on Long Island. London architect George A. Crawley modeled it on English manor houses of the late seventeenth century, giving it a symmetrical south front, a stone colonnade, a yellow slate hip roof and fifteen dormers. Horace Trumbauer designed an east service wing in 1911, and a west porch followed in 1924. Inside, carved oak paneling, marble mantels and English antiques remain largely as the family left them. The grounds include allees of beech and linden, a walled Italian garden, a rose garden, ponds and a classical gazebo. The estate is considered a notable survivor of the Gold Coast country retreats that vanished after the Second World War. After Phipps died in 1958, the house became a museum and the gardens an arboretum open to visitors.","period_of_significance":"1900-","architect_builder":"George A. Crawley","architectural_style":"Manorial architecture, modeled on late seventeenth-century English manor houses (Georgian)","criteria":[],"status_note":"Open to the public as a museum and arboretum on a regular daily schedule; condition of interior described as virtually unaltered.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:39.915841-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/76001234.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/76001234/943edf1206-800.webp","url_1600":"https://nationalhistoricalregister.com/media/76001234/943edf1206-1600.webp","licence":"CC BY-SA 3.0","author":"Gryffindor","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Old_Westbury_Gardens_10.JPG\" rel=\"noopener\">Gryffindor</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:Old_Westbury_Gardens_10.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75319165","wikipedia":"https://en.wikipedia.org/wiki/Old_Westbury_Gardens","wikidata":"https://www.wikidata.org/wiki/Q2018559"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/nassau-county/old-westbury-gardens-76001234/"}