National Historic Site (United States)

National Historic Site (NHS) is a designation for an officially recognized area of national historic significance in the United States. An NHS usually contains a single historical feature directly associated with its subject. The National Historical Park (NHP) is an area that generally extends beyond single properties or buildings, and its resources include a mix of historic and later structures and sometimes significant natural features.

Salem Maritime National Historic Site was the first National Historic Site to be established in the U.S.

As of 2022, there are 63 NHPs and 84 NHSs. Most NHPs and NHSs are managed by the National Park Service (NPS). Some federally designated sites are owned by local authorities or privately owned, but are authorized to request assistance from the NPS as affiliated areas. One property managed by the U.S. Forest Service: Grey Towers National Historic Site.[1]

As of October 15, 1966, all historic areas, including NHPs and NHSs, in the NPS are automatically listed on the National Register of Historic Places (NRHP). There are also about 90,000 NRHP sites, the large majority of which are neither owned nor managed by the NPS. Of these, about 2,500[2] have been designated at the highest status as National Historic Landmark (NHL) sites.

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