{"nrhp_refnum":"78001912","name":"Gardiners Island Windmill","other_names":[],"category":"building","location":{"address":"On Gardiners Island","address_restricted":false,"city":"East Hampton","county":"Suffolk County","state":"NY","lat":41.091377599000054,"lon":-72.11069355199999,"geom_source":"nps_gis"},"listed_date":"1978-12-27","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Engineering","Architecture"],"significance_levels":["state"],"summary":{"what_it_is":"A three-story, octagonal, shingle-clad smock mill with a boat-shaped cap, built in 1795 on Gardiners Island in East Hampton, Suffolk County, New York. It was built as a grist windmill by Nathaniel Dominy V.","why_significant":"The nomination calls it one of four surviving Long Island windmills built by the Dominy family of East Hampton craftsmen. It keeps all its machinery and has stayed part of the Gardiner estate since the eighteenth century. Continuous family ownership and the island's isolation helped preserve this technologically significant structure, and it is one of few mills still on its original site.","narrative":"Gardiners Island Windmill is an octagonal, three-story smock mill clad in shingles and topped with a boat-shaped cap. Nathaniel Dominy V built it in 1795 as a grist mill, and it sits on a knoll in the old mill lot overlooking Gardiners Bay, occupying less than an acre. A storm damaged it, and it was extensively rebuilt in 1815, when new components such as the great spur wheel and stone nut were installed. Its sail arms were replaced in the 1960s. The mill retains all its machinery, including a pair of French burr millstones, a centrifugal regulator, two bolters and an internal capstan used to turn the cap. It is one of four surviving Long Island windmills made by the Dominy family of East Hampton craftsmen. Because the Gardiner family has owned it continuously and the island is isolated, it remains on its original site, one of few mills that do, and is considered technologically significant. It is currently vacant and in fair condition.","period_of_significance":null,"architect_builder":"Nathaniel Dominy V","architectural_style":"Octagonal smock mill with boat-shaped cap","criteria":[],"status_note":"Listed as vacant, in fair condition, on its original site; no threats known. Extensively rebuilt in 1815 after storm damage, and sail arms replaced in the 1960s.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:40.127929-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/78001912.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/78001912/e1d577e75e-800.webp","url_1600":"https://nationalhistoricalregister.com/media/78001912/e1d577e75e-1600.webp","licence":"Public domain","author":"Jim Green","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Gardiners_Island_Windmill.jpg\" rel=\"noopener\">Jim Green</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Gardiners_Island_Windmill.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75314861","wikipedia":"https://en.wikipedia.org/wiki/Gardiners_Island_Windmill","wikidata":"https://www.wikidata.org/wiki/Q5522553"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/suffolk-county/gardiners-island-windmill-78001912/"}