This feature class describes National Heritage Areas as designated by the National Park Service. Based on National Register of Historic Places resource type definitions applied across all of the NPS cultural resource databases, a district possesses a significant concentration, linkage, or continuity of sites, buildings, structures, or objects united historically or aesthetically by plan or physical development. Districts include: college campuses, central business districts, residential areas, commercial areas, large forts, industrial complexes, civic centers, rural villages, canal systems, collections of habitation and limited activity sites, irrigation systems, large farms, ranches, estates, plantations, transportation networks and large landscaped parks. Attribute data in this dataset are intentionally limited to those necessary for spatial data maintenance and feature level metadata necessary to document the lineage of the geography itself. Both restricted and unrestricted locations of historic districts are included in this GeoDatabase, and identified in the feature level metadata. Release of locational information for cultural resources are subject to the provisions of Section 304 of the National Historic Preservation Act as Amended and Section (9)(a)(2) of the Archaeological Resources Protection Act as Amended. The metadata in the feature attribute table are compliant with the National Park Service’s Cultural Resource Spatial Data Transfer Standards. These standards were created to facilitate the exchange of spatial data within a variety of contexts, particularly Sections 106 and 110 of NHPA as well as in the context of disaster recovery events.