{"nrhp_refnum":"71000088","name":"Market Square Historic District","other_names":[],"category":"district","location":{"address":"Market Sq. and properties fronting on State, Merrimac, Liberty, and Water Sts.","address_restricted":false,"city":"Newburyport","county":"Essex County","state":"MA","lat":42.81120217700004,"lon":-70.86977723499996,"geom_source":"nps_gis"},"listed_date":"1971-02-25","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Commerce","Architecture"],"significance_levels":["national"],"summary":{"what_it_is":"A 6.2-acre commercial historic district centered on Market Square in Newburyport, Essex County, Massachusetts, along State, Merrimac, Water and Liberty Streets by the Merrimack River. Most buildings date from the rebuilding after the 1811 fire.","why_significant":"The district is one of the last surviving seaport business districts from New England's golden age of shipping. Rebuilding after the 1811 fire under a brick-and-stone building act produced a uniform Federal-style streetscape that the nomination calls unique among New England seaport cities. It also includes the 1823 Market House and the 1834-35 Custom House designed by Robert Mills.","narrative":"Market Square in Newburyport, Massachusetts, is a triangular open space where State, Water and Merrimac Streets meet beside the Merrimack River. Around it stands a district of about 6.2 acres, made up mostly of three-story brick row buildings with shops below and dwellings above. A fire on May 31, 1811, destroyed nearly the whole area, and a state act required that new buildings be brick or stone. Most of the square was rebuilt over the next twenty-one years under that rule, giving the streets a consistent Federal-style look, with massive fire walls ending in stepped gables. Two buildings stand out: the brick Market House begun in 1823, later converted to a fire station, and the Custom House of 1834-35, designed by Robert Mills. The square was the center of the port's shipbuilding, fishing, trading and distilling economy. Some buildings were owned by a redevelopment authority and stood empty and deteriorated awaiting restoration, while privately owned shops remained in use.","period_of_significance":"1811-1832","architect_builder":"Robert Mills (U.S. Custom House)","architectural_style":"Federal style; Custom House described as classical revival","criteria":[],"status_note":"Condition marked fair and deteriorated. Properties owned by the Redevelopment Authority are vacant and deteriorated pending restoration, while privately owned properties are occupied and being upgraded.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:11:53.31388-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/14/7947/63794714/content/electronic-records/rg-079/NPS_MA/71000088.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/71000088/6ae6ea1f23-800.webp","url_1600":"https://nationalhistoricalregister.com/media/71000088/6ae6ea1f23-1600.webp","licence":"CC BY 3.0","author":"John Phelan","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Market_Square,_Newburyport_MA.jpg\" rel=\"noopener\">John Phelan</a>, <a href=\"https://creativecommons.org/licenses/by/3.0\" rel=\"license noopener\">CC BY 3.0</a>, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Market_Square,_Newburyport_MA.jpg"},"district":{"nrhp_refnum":"84002411","name":"Newburyport Historic District","url":"https://nationalhistoricalregister.com/districts/massachusetts/newburyport-historic-district-84002411/"},"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63794714","wikipedia":"https://en.wikipedia.org/wiki/Market_Square_Historic_District_(Newburyport,_Massachusetts)","wikidata":"https://www.wikidata.org/wiki/Q6770733"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/essex-county/market-square-historic-district-71000088/"}