These points are directly sourced from the National Historic Landmarks, National Register, State Register, Local Historic Districts, Local Historic Places, Historic Resources inventories, CHC files, Connecticut Barns listings, Connecticut Arts & letters listings, Connecticut Making Places listings, Connecticut Freedom Trail listings, and various special surveys (Sculpture, Civil War Monuments, Municipal Parks, Town Greens, Historic Bridges). If a resource appears in multiple pdfs, it will appear as one entry.
The geolocation of these points is based on the addresses and pre-existing maps that appear in the associated pdfs of the resources. Some resources were unable to be geolocated; but will still appear in the attribute table of this layer.
The following is a list of the sources for each resource with their associated designation:
1). National Historic Landmark (NHL); with the designation \u201cNHL\u201d.
2). National Register (NR); with the designation \u201cNRIND\u201d for individual resources or NRDIS for NR Districts. A \u201c-C\u201d or a \u201c-NC\u201d is added at the end of NRIND or NRDIS to indicate if it is a contributing or non-contributing resource.
3). Restricted National Register (RNR); with the designation \u201cNRIND\u201d for individual resources or NRDIS for NR Districts. A \u201c-C\u201d or a \u201c-NC\u201d is added at the end of NRIND or NRDIS to indicate if it is a contributing or non-contributing resource. These resources are not geolocated and their pdfs are no available to be viewed on the", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "https://geodata.ct.gov/datasets/ctmaps::opportunity-zones-3", "mediaType": "text/html", "title": "ArcGIS Hub Dataset"}, {"@type": "dcat:Distribution", "downloadURL": "https://services3.arcgis.com/3FL1kr7L4LvwA2Kb/arcgis/rest/services/CT_Public_Above_Ground_Resources/FeatureServer/3", "mediaType": "application/json", "title": "ArcGIS GeoService"}, {"@type": "dcat:Distribution", "downloadURL": "https://geodata.ct.gov/api/download/v1/items/ad26b781d4dd467bbe28e9b8f8d3d910/csv?layers=3", "mediaType": "text/csv", "title": "CSV"}, {"@type": "dcat:Distribution", "downloadURL": "https://geodata.ct.gov/api/download/v1/items/ad26b781d4dd467bbe28e9b8f8d3d910/shapefile?layers=3", "mediaType": "application/zip", "title": "Shapefile"}, {"@type": "dcat:Distribution", "downloadURL": "https://geodata.ct.gov/api/download/v1/items/ad26b781d4dd467bbe28e9b8f8d3d910/geojson?layers=3", "mediaType": "application/vnd.geo+json", "title": "GeoJSON"}, {"@type": "dcat:Distribution", "downloadURL": "https://geodata.ct.gov/api/download/v1/items/ad26b781d4dd467bbe28e9b8f8d3d910/kml?layers=3", "mediaType": "application/vnd.google-earth.kml+xml", "title": "KML"}], "identifier": "https://www.arcgis.com/home/item.html?id=ad26b781d4dd467bbe28e9b8f8d3d910&sublayer=3", "issued": "2023-12-04", "keyword": ["conncris", "shpo", "above ground resources"], "landingPage": "https://geodata.ct.gov/datasets/ctmaps::opportunity-zones-3", "license": "https://creativecommons.org/licenses/by-nc-nd/4.0", "modified": "2026-04-10", "publisher": {"@type": "org:Organization", "name": "State of Connecticut"}, "spatial": "-73.5683,41.0196,-71.8806,41.9321", "theme": ["geospatial"], "title": "Opportunity Zones"}