{"nrhp_refnum":"66000059","name":"Vanderbilt Mansion National Historic Site","other_names":[],"category":"district","location":{"address":"N edge of Hyde Park, U.S. 9","address_restricted":false,"city":"Hyde Park","county":"Dutchess County","state":"NY","lat":41.79934879400005,"lon":-73.94186894996972,"geom_source":"nps_gis"},"listed_date":"1966-10-15","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Landscape Architecture","Economics","Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"A 212-acre estate on the Hudson River in Hyde Park, Dutchess County, New York, centered on a Beaux-Arts mansion built 1896-99 for Frederick W. Vanderbilt, with gardens, outbuildings, bridges, dams and walls.","why_significant":"The estate is presented as a splendid example of the period between the Civil War and World War I, when financiers and industrialists lived in a style emulating European grandeur. The mansion, designed by McKim, Mead and White, is cited as a well-proportioned example of palatial architecture with interiors by leading decorators. The grounds are also noted for their place in landscape architecture and early horticulture.","narrative":"Frederick W. Vanderbilt's country estate at Hyde Park lies between the Albany Post Road and the Hudson River, about 80 miles north of New York City. Its focus is a 54-room Beaux-Arts mansion of Indiana limestone, designed by Charles Follen McKim of McKim, Mead and White and built by Norcross Brothers between 1896 and 1899. Its interiors were decorated by Georges Glaenzer, Ogden Codman and the architects themselves. Around it Vanderbilt added a pavilion, coach house, gate houses, a power house, concrete bridges, dams, stone boundary walls and formal Italian gardens. Two 1875 buildings by Sturgis and Brigham, the Gardener's Cottage and Tool House, survive from the earlier Langdon ownership. The estate was listed as a surviving record of the era when wealthy financiers lived in a style that consciously emulated European pomp. Its grounds also reflect trends in landscape architecture and a long horticultural tradition on the site. Vanderbilt fortune came largely from railroads, and he directed dozens of them.","period_of_significance":"1896-1899","architect_builder":"Charles Follen McKim (McKim, Mead and White); built by Norcross Brothers","architectural_style":"Beaux-Arts","criteria":[],"status_note":"Condition listed as good and altered; the mansion is the part most like its Vanderbilt-era state, and several outbuildings serve as employee residences or park maintenance space.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:39.23598-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/66000059.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/66000059/ff1816eacb-800.webp","url_1600":"https://nationalhistoricalregister.com/media/66000059/ff1816eacb-1600.webp","licence":"Public domain","author":"Daderot","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Vanderbilt_Mansion_-_IMG_7939.JPG\" rel=\"noopener\">Daderot</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Vanderbilt_Mansion_-_IMG_7939.JPG"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75317508","wikipedia":"https://en.wikipedia.org/wiki/Vanderbilt_Mansion_National_Historic_Site","wikidata":"https://www.wikidata.org/wiki/Q101244393"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/dutchess-county/vanderbilt-mansion-national-historic-site-66000059/"}