{"@context":"https://schema.org","archive":{"base_url":"https://boston.fyi","csts_conformance":"provisional","csts_profile":"CSTS-01/ARCHIVE","name":"The Boston Archive","subject":"Boston, Massachusetts"},"canonical_url":"https://boston.fyi/place/tremlett-square","json_ld":{"@context":"https://schema.org","@graph":[{"@id":"https://boston.fyi/#archive","@type":"ArchiveOrganization","archiveHeld":{"@type":"ArchiveComponent","about":"Boston, Massachusetts","name":"The The Boston Archive holdings"},"conformsTo":"https://boston.fyi/standards/csts-01-reference-profile","description":"The Boston Archive is the authority source for one subject. It holds the public civic record of Boston, Massachusetts — its places, people, organizations, events, works, and objects; the documents and datasets that attest them; and the grey record of what people say about the city that no authority ever wrote down. Every record carries a stable identifier, a canonical address, a full provenance chain, and its version history. Every record resolves as a page for a person and as JSON for a machine.","email":"archive@boston.fyi","founder":{"@type":"Person","name":"LeMay Inc."},"foundingDate":"2026","name":"The Boston Archive","slogan":"The record of one city, held whole.","url":"https://boston.fyi"},{"@id":"https://boston.fyi/#website","@type":"WebSite","conformsTo":"https://boston.fyi/standards/csts-01-reference-profile","inLanguage":"en","name":"The Boston Archive","potentialAction":{"@type":"SearchAction","query-input":"required name=search_term_string","target":{"@type":"EntryPoint","urlTemplate":"https://boston.fyi/ask?q={search_term_string}"}},"publisher":{"@id":"https://boston.fyi/#archive"},"url":"https://boston.fyi"},{"@id":"https://boston.fyi/place/tremlett-square#provenance","@type":"CreativeWork","additionalProperty":[{"@type":"PropertyValue","name":"sourceCollection","value":"City of Boston Open Data Portal (Analyze Boston)"},{"@type":"PropertyValue","name":"licenseName","value":"Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0"},{"@type":"PropertyValue","name":"licenseOpenness","value":"public_domain"},{"@type":"PropertyValue","name":"retrievedAt","value":"2026-09-02T22:38:17.221385+00:00"},{"@type":"PropertyValue","name":"transformCount","value":3}],"creator":{"@type":"Organization","name":"City of Boston Open Data Portal (Analyze Boston)"},"creditText":"City of Boston","dateCreated":"2026-09-02T22:38:17.221385+00:00","isBasedOn":"https://data.boston.gov/dataset/open-space","license":"https://opendatacommons.org/licenses/pddl/1-0/","name":"Provenance of Tremlett Square"},{"@id":"https://boston.fyi/place/tremlett-square","@type":"Place","additionalProperty":[{"@type":"PropertyValue","name":"recordType","value":"Place"},{"@type":"PropertyValue","description":"official = promulgated by an authority; vernacular = held by attestation alone. The two layers are never merged.","name":"boundaryLayer","value":"official"},{"@type":"PropertyValue","name":"placeType","value":"park"},{"@type":"PropertyValue","name":"boundaryAuthority","value":"City of Boston Parks and Recreation Department"},{"@type":"PropertyValue","name":"areaSquareMetres","value":639.8141679318869}],"conformsTo":"https://boston.fyi/standards/csts-01-reference-profile","containedInPlace":{"@type":"Place","name":"Boston"},"dateCreated":"2026-09-02T22:42:51.635347+00:00","dateModified":"2026-09-02T22:42:51.635347+00:00","description":"Protected open space in the City of Boston open-space inventory. At 39P Tremlett Street.","encoding":{"@type":"MediaObject","contentUrl":"https://boston.fyi/place/tremlett-square.json","encodingFormat":"application/json"},"geo":{"@type":"GeoCoordinates","latitude":42.295405482,"longitude":-71.067512734},"hasMap":{"@type":"Map","encodingFormat":"application/geo+json","geometry":{"coordinates":[[[[-71.067736137,42.295321776],[-71.067260831,42.295425057],[-71.067247632,42.295429894],[-71.067235711,42.295440601],[-71.06723101,42.295454267],[-71.0672329,42.295466491],[-71.067242036,42.295478254],[-71.067256461,42.295486616],[-71.067272231,42.295490585],[-71.067288701,42.295488693],[-71.067765321,42.295385906],[-71.067781847,42.295375705],[-71.067789822,42.295364495],[-71.067791229,42.295351306],[-71.067787353,42.29534054],[-71.067778212,42.295329754],[-71.067766406,42.295323356],[-71.067750628,42.295320364],[-71.067736137,42.295321776]]],[[[-71.068267495,42.295203555],[-71.067871948,42.295291011],[-71.067858085,42.295296823],[-71.067851429,42.29530755],[-71.067848068,42.2953178],[-71.067847985,42.295330016],[-71.067854507,42.295338838],[-71.067863658,42.295348157],[-71.067876129,42.29535358],[-71.0678906,42.2953551],[-71.067903758,42.295356127],[-71.068292737,42.295266692],[-71.06831056,42.295259429],[-71.068323123,42.295251168],[-71.068329137,42.295237996],[-71.068326588,42.295225768],[-71.06831941,42.295216456],[-71.068308929,42.295209087],[-71.068295796,42.29520415],[-71.06828199,42.295201654],[-71.068267495,42.295203555]]]],"type":"MultiPolygon"},"name":"Boundary of Tremlett Square"},"identifier":"urn:lemay:boston:entity:tremlett-square","inLanguage":"en","isPartOf":{"@id":"https://boston.fyi/#archive"},"license":"https://opendatacommons.org/licenses/pddl/1-0/","name":"Tremlett Square","provenance":{"@id":"https://boston.fyi/place/tremlett-square#provenance"},"url":"https://boston.fyi/place/tremlett-square","version":1},{"@id":"https://boston.fyi/place/tremlett-square#breadcrumbs","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","item":"https://boston.fyi","name":"The Boston Archive","position":1},{"@type":"ListItem","item":"https://boston.fyi/place","name":"Places","position":2},{"@type":"ListItem","item":"https://boston.fyi/place/tremlett-square","name":"Tremlett Square","position":3}]}]},"json_url":"https://boston.fyi/place/tremlett-square.json","record":{"alternate_names":[],"canonical_name":"Tremlett Square","canonical_path":"/place/tremlett-square","created_at":"2026-09-02T22:42:51.635347Z","description":"Protected open space in the City of Boston open-space inventory. At 39P Tremlett Street.","detail":{"area_sq_m":639.8141679318869,"authority":"City of Boston Parks and Recreation Department","boundary_layer":"official","centroid_geojson":{"coordinates":[-71.067512734,42.295405482],"type":"Point"},"detail_type":"Place","geometry_geojson":{"coordinates":[[[[-71.067736137,42.295321776],[-71.067260831,42.295425057],[-71.067247632,42.295429894],[-71.067235711,42.295440601],[-71.06723101,42.295454267],[-71.0672329,42.295466491],[-71.067242036,42.295478254],[-71.067256461,42.295486616],[-71.067272231,42.295490585],[-71.067288701,42.295488693],[-71.067765321,42.295385906],[-71.067781847,42.295375705],[-71.067789822,42.295364495],[-71.067791229,42.295351306],[-71.067787353,42.29534054],[-71.067778212,42.295329754],[-71.067766406,42.295323356],[-71.067750628,42.295320364],[-71.067736137,42.295321776]]],[[[-71.068267495,42.295203555],[-71.067871948,42.295291011],[-71.067858085,42.295296823],[-71.067851429,42.29530755],[-71.067848068,42.2953178],[-71.067847985,42.295330016],[-71.067854507,42.295338838],[-71.067863658,42.295348157],[-71.067876129,42.29535358],[-71.0678906,42.2953551],[-71.067903758,42.295356127],[-71.068292737,42.295266692],[-71.06831056,42.295259429],[-71.068323123,42.295251168],[-71.068329137,42.295237996],[-71.068326588,42.295225768],[-71.06831941,42.295216456],[-71.068308929,42.295209087],[-71.068295796,42.29520415],[-71.06828199,42.295201654],[-71.068267495,42.295203555]]]],"type":"MultiPolygon"},"gnis_feature_id":null,"place_type":"park","within_place_id":"59094999-1a7e-42fc-a665-bf54c5d7e59a","within_place_name":"Boston"},"entity_type":"Place","external_ids":{"address":"39P Tremlett Street","boston_dataset":"open-space","latitude":42.29539975978952,"longitude":-71.06752371605258},"id":"02adb504-6c99-4391-b003-e30ff1e55d84","kind":"entity","provenance":{"attribution":"City of Boston","license_id":"odc-pddl","license_name":"Open Data Commons Public Domain Dedication and Licence (PDDL) 1.0","license_url":"https://opendatacommons.org/licenses/pddl/1-0/","openness":"public_domain","retrieved_at":"2026-09-02T22:38:17.221385Z","rights_statement":"Open Data Commons Public Domain Dedication and License (PDDL)","source_id":"city-of-boston-open-data","source_identifier":"469","source_name":"City of Boston Open Data Portal (Analyze Boston)","source_url":"https://data.boston.gov/dataset/open-space","transforms":[{"description":"retrieved the dataset's GeoJSON from the City of Boston open-data portal","input_sha256":null,"operation":"fetch","output_sha256":null,"parameters":{},"performed_at":"2026-09-02T22:42:51.750461Z","seq":1,"tool":"archive-ingest 0.1.0"},{"description":"the source's own name field became the record title; no name was supplied by the archive","input_sha256":null,"operation":"normalize","output_sha256":null,"parameters":{},"performed_at":"2026-09-02T22:42:51.788378Z","seq":2,"tool":"archive-ingest 0.1.0"},{"description":"the source is WGS 84 (EPSG:4326); geometry was set to that SRID without alteration of coordinates","input_sha256":null,"operation":"reproject","output_sha256":null,"parameters":{},"performed_at":"2026-09-02T22:42:51.828992Z","seq":3,"tool":"archive-ingest 0.1.0"}]},"record_kind":"entity","slug":"tremlett-square","status":"published","summary":"Protected open space in the City of Boston open-space inventory. At 39P Tremlett Street.","title":"Tremlett Square","updated_at":"2026-09-02T22:42:51.635347Z","urn":"urn:lemay:boston:entity:tremlett-square","version":1,"withdrawn_reason":null},"related":[{"record":{"canonical_path":"/place/boston","id":"59094999-1a7e-42fc-a665-bf54c5d7e59a","kind":"entity","title":"Boston","urn":"urn:lemay:boston:entity:boston"},"relation":"located_in"}],"urn":"urn:lemay:boston:entity:tremlett-square","version_history":[{"change_note":"accessioned from the City of Boston `open-space` file","changed_by":"archive-ingest 0.1.0","recorded_at":"2026-09-02T22:42:51.867361Z","version":1}]}