{"nrhp_refnum":"66000047","name":"Saugus Iron Works National Historic Site","other_names":["Hammersmith"],"category":"district","location":{"address":"244 Central St.","address_restricted":false,"city":"Saugus","county":"Essex County","state":"MA","lat":42.46802803050005,"lon":-71.00787043551671,"geom_source":"nps_gis"},"listed_date":"1966-10-15","is_nhl":true,"nhl_designated_date":"1963-11-27","areas_of_significance":["Industry","Engineering","Architecture"],"significance_levels":["national"],"summary":null,"photo":{"url_800":"https://nationalhistoricalregister.com/media/66000047/05af8d7a6a-800.webp","url_1600":"https://nationalhistoricalregister.com/media/66000047/05af8d7a6a-1600.webp","licence":"CC BY-SA 3.0","author":"Daderot at English Wikipedia","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Saugus_Iron_Mill.jpg\" rel=\"noopener\">Daderot at English Wikipedia</a>, <a href=\"http://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:Saugus_Iron_Mill.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":null,"wikipedia":"https://en.wikipedia.org/wiki/Saugus_Iron_Works_National_Historic_Site","wikidata":"https://www.wikidata.org/wiki/Q7427233"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/essex-county/saugus-iron-works-national-historic-site-66000047/"}