{"nrhp_refnum":"72001297","name":"Old County Courthouse","other_names":["Plymouth Old County Courthouse","Old Town House"],"category":"building","location":{"address":"Leyden and Market Sts.","address_restricted":false,"city":"Plymouth","county":"Plymouth County","state":"MA","lat":41.95558537800008,"lon":-70.66407793399998,"geom_source":"nps_gis"},"listed_date":"1972-02-23","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Politics/Government"],"significance_levels":["local"],"summary":{"what_it_is":"A two-story frame former county courthouse and town house at the corner of Leyden and Market Streets on Town Square in Plymouth, Massachusetts, built in 1749 and owned by the Town of Plymouth.","why_significant":"The nomination calls it one of the oldest local government buildings still standing in the United States. Its site has been publicly owned since 1620 and has served as a colonial capitol, county court house, probate court, registry of deeds and town house. The building was designed by Peter Oliver of Middleboro, and it has been restored to its 1749 appearance.","narrative":"Standing at the corner of Leyden and Market Streets on Town Square in Plymouth, this two-story frame building dates to 1749 and is described as one of the oldest local government buildings still standing in the United States. It replaced a court house of 1670 that had been added to an earlier \"country house,\" and local historians believe the older vaulted ceiling and roof were reused. Peter Oliver of Middleboro, a judge of the Court of Common Pleas, designed it. The county and town shared the building, with the courtroom upstairs, town offices on the first floor and a market in the basement. The site has been publicly owned since 1620. Over time the rooms housed schools, the public library, church services and nearly every town department. The town became sole owner in 1821. A HUD grant paid for restoration to its 1749 appearance, including twelve-over-twelve windows and a five-bay front facade, and a museum of town history was being created inside.","period_of_significance":"1749","architect_builder":"Peter Oliver of Middleboro (designer)","architectural_style":null,"criteria":[],"status_note":"Described as in excellent condition and restored to its 1749 appearance with HUD grant aid; a second-floor courtroom was to be open to visitors and a town history museum was being created on the first floor.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:11:54.621572-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/62/7966/63796662/content/electronic-records/rg-079/NPS_MA/72001297.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/72001297/f906421820-800.webp","url_1600":"https://nationalhistoricalregister.com/media/72001297/f906421820-1600.webp","licence":"CC BY-SA 3.0","author":"Swampyank at en.wikipedia","credit_html":"<a href=\"https://commons.wikimedia.org/wiki/File:Old_County_Courthouse_in_Plymouth_MA.jpg\" rel=\"noopener\">Swampyank at en.wikipedia</a>, <a href=\"https://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:Old_County_Courthouse_in_Plymouth_MA.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/63796662","wikipedia":"https://en.wikipedia.org/wiki/Old_County_Courthouse","wikidata":"https://www.wikidata.org/wiki/Q7083773"},"indexable":true,"url":"https://nationalhistoricalregister.com/massachusetts/plymouth-county/old-county-courthouse-72001297/"}