{"nrhp_refnum":"66000898","name":"Springfield Armory National Historic Site","other_names":["Armory Square"],"category":"district","location":{"address":"Armory Sq.","address_restricted":false,"city":"Springfield","county":"Hampden County","state":"MA","lat":42.108517575000036,"lon":-72.5810713206277,"geom_source":"nps_gis"},"listed_date":"1966-10-15","is_nhl":true,"nhl_designated_date":"1960-12-19","areas_of_significance":["Military","Politics/Government"],"significance_levels":["national"],"summary":{"what_it_is":"Armory Square is a 54-acre hilltop district in Springfield, Massachusetts, bounded by State, Federal, Pearl and Byers Streets. It is the administrative core of the former Springfield Armory, with nearly thirty brick buildings around an 8.75-acre parade ground, built mainly between 1807 and the Civil War era.","why_significant":"Established as a Federal arsenal in 1794, the Armory was a Revolutionary War ordnance depot and the site of the 1787 attack by Shays' Rebellion. It helped develop interchangeable parts, notably through Thomas Blanchard's 1822 gun-stock turning machine, and was long the nation's main small arms supplier. When it closed in 1967-68 it was the Federal Government's oldest manufacturing arsenal.","narrative":"Armory Square is a 54-acre hilltop district in Springfield, Massachusetts, once the administrative center of the Springfield Armory. Nearly thirty brick buildings with slate roofs, white trim and a consistent scale surround an 8.75-acre parade ground. They include the Greek Revival Commanding Officer's Quarters of 1845-46, the West Arsenal of 1807-08 (the oldest surviving building), the Main Arsenal with its clock tower, and a 764-foot cavalry stable and barracks from 1863. Congress established the Armory as a Federal arsenal in 1794, though it had already served as a Revolutionary War supply depot and was the target of Shays' Rebellion in 1787. Its workers helped develop interchangeable parts, and it was long the nation's principal small arms manufacturer. The Armory closed as a military post in 1967-68. Today a technical community college occupies much of the Square, and a museum in the Main Arsenal houses a major small arms collection. Two newer college buildings are considered intrusions.","period_of_significance":"1778-1968","architect_builder":null,"architectural_style":"Greek Revival, Second Empire and other restrained, functional military styles in brick with slate roofs","criteria":[],"status_note":"Condition listed as good and altered. Most of the Square is occupied by a technical community college, and part of it houses a museum open to the public. Two modern college buildings are noted as intrusions that do not contribute.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:11:53.337179-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/13/7937/63793713/content/electronic-records/rg-079/NPS_MA/66000898_NHL.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/66000898/510b782548-800.webp","url_1600":"https://nationalhistoricalregister.com/media/66000898/510b782548-1600.webp","licence":"Public domain","author":"National Park Service","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Springfield_Arsenal_as_seen_from_south_facade.jpg\" rel=\"noopener\">National Park Service</a>, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Springfield_Arsenal_as_seen_from_south_facade.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63793713","wikipedia":"https://en.wikipedia.org/wiki/Springfield_Armory","wikidata":"https://www.wikidata.org/wiki/Q1193204"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/hampden-county/springfield-armory-national-historic-site-66000898/"}