{"nrhp_refnum":"75001208","name":"Seventh Regiment Armory","other_names":["Seventh Regiment Armory National Historic Landmark"],"category":"building","location":{"address":"643 Park Ave.","address_restricted":false,"city":"New York","county":"Manhattan","state":"NY","lat":40.76725037950004,"lon":-73.96551930492507,"geom_source":"nps_gis"},"listed_date":"1975-04-14","is_nhl":true,"nhl_designated_date":"1986-02-24","areas_of_significance":["Military","Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"A massive brick and granite armory occupying the block between Park and Lexington Avenues and 66th and 67th Streets at 643 Park Avenue, Manhattan, built 1877-1880 to designs by Charles W. Clinton on part of the former Hamilton Park.","why_significant":"The armory is an important Park Avenue landmark tied to the military and social history of New York's 'silk stocking' Seventh Regiment. Architect Charles W. Clinton combined a castle-like romantic revival style with advanced train-shed construction for the drill hall. Its Veterans Room and Library preserve interior work by the Associated Artists led by Louis Comfort Tiffany, including Stanford White.","narrative":"Occupying a full city block on Park Avenue between 66th and 67th Streets, the Seventh Regiment Armory was built from 1877 to 1880 for New York's Seventh Regiment, known as the 'silk stocking' regiment. Architect Charles W. Clinton gave the brick and granite building a fortified, castle-like character, with towers, crenellation and narrow loopholes. Behind the administration building, a 200-by-300-foot drill room is covered by a wide barrel vault on iron trusses, borrowing the train shed method of construction. Two interiors, the Veterans Room and the Library, were decorated by the Associated Artists under Louis Comfort Tiffany, with contributions from Stanford White and others. The front portion gained additional stories in 1909 and 1930, and the original belfry was removed. The building reflects the regiment's role in the city's military and social life, from the Civil War through the world wars, and it continues to serve the regiment and host public events.","period_of_significance":"1877-1880","architect_builder":"Charles W. Clinton","architectural_style":"Romantic revival, castle-like fortified style with Italian influence","criteria":[],"status_note":"Listed in excellent condition, occupied and still owned and actively used by the Seventh Regiment for military and social events; the exterior is largely intact apart from added upper stories.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:50:38.789387-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_NY/75001208.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/75001208/cb62641078-800.webp","url_1600":"https://nationalhistoricalregister.com/media/75001208/cb62641078-1600.webp","licence":"CC BY 2.0","author":"Ajay Suresh from New York, NY, USA","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Seventh_Regiment_Armory_-_Park_Avenue_Armory_-_Front_(48377217362).jpg\" rel=\"noopener\">Ajay Suresh from New York, NY, USA</a>, <a href=\"https://creativecommons.org/licenses/by/2.0\" rel=\"license noopener\">CC BY 2.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Seventh_Regiment_Armory_-_Park_Avenue_Armory_-_Front_(48377217362).jpg"},"district":{"nrhp_refnum":"06000822","name":"Upper East Side Historic District (Boundary Increase)","url":"https://nationalhistoricalregister.com/districts/new-york/upper-east-side-historic-district-boundary-increase-06000822/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/75319895","wikipedia":"https://en.wikipedia.org/wiki/Park_Avenue_Armory","wikidata":"https://www.wikidata.org/wiki/Q7457745"},"indexable":true,"url":"https://nationalhistoricalregister.com/new-york/manhattan/seventh-regiment-armory-75001208/"}