{"nrhp_refnum":"66000096","name":"Sagamore Hill National Historic Site","other_names":["Sagamore Hill"],"category":"building","location":{"address":"Sagamore Hill Rd.","address_restricted":false,"city":"Oyster Bay","county":"Nassau County","state":"NY","lat":40.885490301500056,"lon":-73.49638445741613,"geom_source":"nps_gis"},"listed_date":"1966-10-15","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Conservation","Politics/Government","Architecture","Historic - Non-Aboriginal"],"significance_levels":["national"],"summary":{"what_it_is":"Sagamore Hill is Theodore Roosevelt's home and 85-acre estate in Oyster Bay, Long Island, New York. The house was built in 1884-85 to a design by the New York architects Lamb and Rich, and the site includes farm outbuildings and woodland.","why_significant":"It was Theodore Roosevelt's home from 1885 until his death in 1919 and served as the 'Summer White House' during his presidency. He was formally notified of his nominations for Governor, Vice-President and President on its porch. In 1905 he met the envoys of Japan and Russia in its library before the conference that led to the Treaty of Portsmouth.","narrative":"Sagamore Hill is the Long Island home of Theodore Roosevelt, set on about 85 acres of farm and woodland at Oyster Bay overlooking Cold Spring Harbor. Roosevelt began building it in 1884 on land bought the year before. The New York architects Lamb and Rich designed the red brick and shingled house in the Queen Anne style, with gables, dormers, verandahs and a porte-cochere, and Roosevelt's own ideas shaped the interior. In 1905 the North Room, designed by C. Grant LaFarge, was added for receiving delegates and visitors. Roosevelt lived here from 1885 until his death in 1919. During his presidency it served as the Summer White House, and he met envoys of Japan and Russia in the library before the talks that led to the Treaty of Portsmouth. The Theodore Roosevelt Association bought the property in 1950 and donated it to the federal government in 1963. Outbuildings include a barn, a windmill reconstructed in 1971, and an ice house.","period_of_significance":"1884-1919","architect_builder":"Lamb and Rich (house, 1884-85); C. Grant LaFarge (North Room, 1905); Gutzon Borglum (eagle and wreath decoration on North Room gable)","architectural_style":"Queen Anne","criteria":[],"status_note":"Preserved as a National Historic Site with the house open as a museum; condition rated excellent/good. Some outbuildings are used as park residences, offices and visitor facilities.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:39.193786-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/66000096.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/66000096/0cc0e093ea-800.webp","url_1600":"https://nationalhistoricalregister.com/media/66000096/0cc0e093ea-1600.webp","licence":"Public domain","author":"Underwood & Underwood, copyright claimant","credit_html":"Underwood & Underwood, copyright claimant, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:1500_pilgrims_travel_to_Sagamore_Hill_to_tell_Colonel_Roosevelt_they_are_with_him_LCCN2013650876.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75319191","wikipedia":null,"wikidata":"https://www.wikidata.org/wiki/Q34859628"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/nassau-county/sagamore-hill-national-historic-site-66000096/"}