{"nrhp_refnum":"82001207","name":"Warburg, Felix M., Mansion","other_names":["The Jewish Museum"],"category":"building","location":{"address":"1109 5th Ave.","address_restricted":false,"city":"New York","county":"Manhattan","state":"NY","lat":40.78544521800006,"lon":-73.95699658399997,"geom_source":"nps_gis"},"listed_date":"1982-10-29","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A Francois I style mansion at 1109 Fifth Avenue in the Carnegie Hill area of Manhattan, built in 1906-08 for Felix and Frieda Warburg and designed by C.P.H. Gilbert. It is now home to the Jewish Museum.","why_significant":"The nomination argues the mansion is among the finest surviving Fifth Avenue mansions and a rare, exceptionally handsome example of the Francois I style by prominent architect C.P.H. Gilbert. It is also tied to the Warburg family, nationally important bankers and philanthropists, and to Frieda Warburg's gift of the house for use as a Jewish museum.","narrative":"Built in 1906-08 at 1109 Fifth Avenue, this limestone mansion faces Central Park in Manhattan's Carnegie Hill area. Architect C.P.H. Gilbert designed it for banker Felix Warburg and his wife Frieda in the Francois I style, drawing on late Gothic and early Renaissance models from the Loire Valley. Steep slate roofs, pinnacled stone gables, tall chimneys, copper cresting and richly carved windows and bays mark both the Fifth Avenue and East 92nd Street facades, with the main entrance on the side street. Gilbert's version leans heavily on Gothic detail. Few Fifth Avenue mansions survive, and only one other major example of the style remains in New York City. Warburg, a Kuhn, Loeb partner, was a noted philanthropist who helped found the Joint Distribution Committee and other Jewish organizations. In 1944 Frieda Warburg donated the house to the Jewish Theological Seminary of America for use as the Jewish Museum. A modern four-story addition lies to the north and is considered non-contributing.","period_of_significance":"1906-08","architect_builder":"C.P.H. Gilbert","architectural_style":"Francois I","criteria":[],"status_note":"Occupied and used as a museum. The form rates condition as excellent and altered, with a non-contributing modern addition to the north. A 1982 letter from the museum's counsel says the building is deteriorating, with roof leakage and cracked ornament.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:42.82534-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/82001207.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/82001207/91a8f14c76-800.webp","url_1600":"https://nationalhistoricalregister.com/media/82001207/91a8f14c76-1600.webp","licence":"CC BY-SA 3.0","author":"Gryffindor derivative work: Fpo (talk)","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Felix_Warburg_Mansio.jpg\" rel=\"noopener\">Gryffindor derivative work: Fpo (talk)</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:Felix_Warburg_Mansio.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75320047","wikipedia":"https://en.wikipedia.org/wiki/Felix_M._Warburg_House","wikidata":"https://www.wikidata.org/wiki/Q14706267"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/manhattan/warburg-felix-m-mansion-82001207/"}