{"nrhp_refnum":"06001208","name":"Wereholme","other_names":["Weekes, Harold H., Estate"],"category":"building","location":{"address":"5500 S. Bay Ave.","address_restricted":false,"city":"Islip","county":"Suffolk County","state":"NY","lat":40.712906230000044,"lon":-73.21249167320683,"geom_source":"nps_gis"},"listed_date":"2007-01-04","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Social History"],"significance_levels":["local"],"summary":{"what_it_is":"Wereholme is a seventy-acre estate at 550 South Bay Avenue in Islip, Suffolk County, New York, with a French Eclectic mansion built in 1917 for Harold and Louisine Weekes and designed by Grosvenor Atterbury.","why_significant":"The nomination argues the estate is significant under Criterion A as a highly intact example of the early twentieth century movement of wealthy New Yorkers to Long Island's South Shore. It is significant under Criterion C as an intact design by Grosvenor Atterbury, his last large Long Island estate, notable for its cast concrete block construction with stucco finished to resemble natural stone.","narrative":"Wereholme is a seventy-acre estate on South Bay Avenue in Islip, on Long Island's South Shore. Its L-shaped mansion, completed in 1917, was designed by architect Grosvenor Atterbury for Harold and Louisine Weekes. Louisine's travels in France, including a visit to the chateau Azay-le-Rideau, inspired the French provincial design, with conical-roofed towers, slate roofs, leaded glass windows and a barrel-shaped dovecote. Atterbury built the house and outbuildings of concrete blocks cast on the site and finished in varied shades of rough stucco to imitate natural stone. The estate sits on land that was once part of the Peters family's Windholme Farm. It is significant as an intact example of the summer and year-round estates that wealthy New Yorkers built on Long Island in the early twentieth century, and as Atterbury's last large Long Island estate. Suffolk County bought the property in 2004 after the National Audubon Society occupied it, and plans a natural history interpretive center.","period_of_significance":"1916-1955","architect_builder":"Grosvenor Atterbury","architectural_style":"Early Twentieth Century French Eclectic","criteria":["A","C"],"status_note":"Listed as vacant. Suffolk County purchased the property in 2004 and plans to develop it as a county natural history interpretive center.","vacant_flag":true,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:51:53.370044-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/06001208.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/06001208/a94fbb5fd8-800.webp","url_1600":"https://nationalhistoricalregister.com/media/06001208/a94fbb5fd8-1600.webp","licence":"CC BY-SA 4.0","author":"DanTD","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Wereholme;_Harold_Weeks_Estate-1.jpg\" rel=\"noopener\">DanTD</a>, <a href=\"https://creativecommons.org/licenses/by-sa/4.0\" rel=\"license noopener\">CC BY-SA 4.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Wereholme;_Harold_Weeks_Estate-1.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75322307","wikipedia":"https://en.wikipedia.org/wiki/Wereholme","wikidata":"https://www.wikidata.org/wiki/Q14707739"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/suffolk-county/wereholme-06001208/"}