{"nrhp_refnum":"80002708","name":"Park Avenue Houses","other_names":["Pyne-Davison Blockfront"],"category":"building","location":{"address":"680, 684, 686 and 690 Park Ave.","address_restricted":false,"city":"New York","county":"Manhattan","state":"NY","lat":40.76768895200007,"lon":-73.96592372399994,"geom_source":"nps_gis"},"listed_date":"1980-01-03","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A row of four Neo-Federal townhouses at 680, 684, 686 and 690 Park Avenue, between 68th and 69th Streets in Manhattan, built in 1909-11, 1916-19 and 1925-26 by three architectural firms.","why_significant":"The nomination argues the group is an outstanding example of early twentieth century townhouse design and the last intact block of townhouses on Park Avenue. Three firms, McKim, Mead & White, Walker & Gillette and Delano & Aldrich, matched cornice and window heights, brickwork and base treatment over seventeen years. Each house has been adapted to institutional use.","narrative":"Four Neo-Federal townhouses stand together on Park Avenue between 68th and 69th Streets in Manhattan. They were built between 1909 and 1926 by three architectural firms: McKim, Mead & White designed 680 and 684, Delano & Aldrich designed 686, and Walker & Gillette designed 690. Later architects respected the earlier buildings, so the row shares a rusticated limestone base, Flemish bond brickwork, matching window and cornice heights and a balustraded parapet. Each house still has its own entrance and detailing, from Ionic columns at 680 to the elaborate doorway at 690. The original clients included financier Percy R. Pyne, William Sloane and banker H. P. Davison. The corner house was threatened in 1964 by a plan for a 31-story apartment tower, but it was bought and restored instead. The group was listed as the last intact block of townhouses on Park Avenue and as an outstanding example of early twentieth century townhouse design. Today the houses serve cultural, educational and governmental uses.","period_of_significance":"1900- (specific dates 1909-11, 1916-19, 1925-26)","architect_builder":"McKim, Mead & White; Walker & Gillette; Delano & Aldrich","architectural_style":"Neo-Federal","criteria":[],"status_note":"Excellent condition; all four houses are occupied and adapted to institutional use. Interiors at 680 Park Avenue were partly demolished in 1964 and later restored.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:38.943193-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/80002708.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/80002708/4517e97425-800.webp","url_1600":"https://nationalhistoricalregister.com/media/80002708/4517e97425-1600.webp","licence":"CC BY-SA 3.0","author":"Americasroof (talk)","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:690park.jpg\" rel=\"noopener\">Americasroof (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:690park.jpg"},"district":{"nrhp_refnum":"84002803","name":"Upper East Side Historic District","url":"https://nationalhistoricalregister.com/districts/new-york/upper-east-side-historic-district-84002803/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75319817","wikipedia":"https://en.wikipedia.org/wiki/Park_Avenue_Houses","wikidata":"https://www.wikidata.org/wiki/Q7137631"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/manhattan/park-avenue-houses-80002708/"}