{"nrhp_refnum":"66000138","name":"Bunker Hill Monument","other_names":[],"category":"structure","location":{"address":"Breed's Hill","address_restricted":false,"city":"Boston","county":"Suffolk County","state":"MA","lat":42.37618384950005,"lon":-71.06085887704768,"geom_source":"nps_gis"},"listed_date":"1966-10-15","is_nhl":true,"nhl_designated_date":"1961-01-20","areas_of_significance":["Military","Communications"],"significance_levels":["national"],"summary":{"what_it_is":"A 220-foot granite obelisk and its surrounding park, Monument Square, atop Breed's Hill in the Charlestown district of Boston, Massachusetts. The monument was built 1825-1842 to a design by Solomon Willard.","why_significant":"The monument marks the approximate center of the American redoubt in the Battle of Bunker Hill on June 17, 1775, the first full-scale action between American militia and British regulars in the Revolutionary War. It was also the most ambitious commemorative structure of its day, not surpassed in size until the Washington Monument. Willard's machines for quarrying and handling large stones were an engineering advance.","narrative":"Atop Breed's Hill in Boston's Charlestown district, a 220-foot granite obelisk rises from a park of just under four acres known as Monument Square. Designed and supervised by Solomon Willard, it was built from Quincy granite between 1825 and 1842 and marks the approximate center of the redoubt that American militia held on June 17, 1775. That clash, traditionally called the Battle of Bunker Hill, was the first full-scale action between colonial militia and British regulars in the Revolutionary War. The Americans were driven off after a third assault, but their heavy losses to the British convinced the British command that the rebellion would be hard to put down. The Bunker Hill Monument Association laid the cornerstone with Lafayette in 1825 and later sold most of its 25 acres to cover costs. The grounds include an iron fence with gates honoring American units, a statue of Col. William Prescott, and a 1902 granite lodge. The state took ownership in 1919.","period_of_significance":"1775, 1825-42","architect_builder":"Solomon Willard","architectural_style":null,"criteria":[],"status_note":"Described as in only fair condition, with extensive rehabilitation under way in preparation for the 200th anniversary of the battle. Owned by the Commonwealth of Massachusetts and open to visitors daily.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 01:58:35.359099-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/89/7938/63793889/content/electronic-records/rg-079/NPS_MA/66000138_NHL.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/66000138/1055a51cd1-800.webp","url_1600":"https://nationalhistoricalregister.com/media/66000138/1055a51cd1-1600.webp","licence":"CC BY-SA 4.0","author":"Diego Delso","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Monumento_de_Bunker_Hill,_Boston,_EE.UU.,_2007-08-01_DD_280.jpg\" rel=\"noopener\">Diego Delso</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:Monumento_de_Bunker_Hill,_Boston,_EE.UU.,_2007-08-01_DD_280.jpg"},"district":{"nrhp_refnum":"15000195","name":"Boston National Historical Park","url":"https://nationalhistoricalregister.com/districts/massachusetts/boston-national-historical-park-15000195/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63793889","wikipedia":"https://en.wikipedia.org/wiki/Bunker_Hill_Monument","wikidata":"https://www.wikidata.org/wiki/Q1009561"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/suffolk-county/bunker-hill-monument-66000138/"}