| − | A '''National Historic Landmark''' is a site recognized by the government of the [[United States]] as having particular historical significance. There are roughly 2,500 sites registered as NHLs, and the designation may be conferred by the [[National Park|National Park Service]]. National Historic landmarks may be publicly or privately owned, in contrast with National Parks, and roughly half of the recognized sites are privately held. | + | A '''National Historic Landmark''' (NHL) is a site recognized by the government of the [[United States]] as having particular historical significance. As of early 2023, there are more than 2,600 NHLs in the U.S. today, including"historic buildings, sites, structures, objects, and districts"<ref>//www.nps.gov/orgs/1582/index.htm#:~:text=National%20Historic%20Landmarks%20(NHLs)%20are,structures%2C%20objects%2C%20and%20districts.</ref> This designation may be conferred by the [[National Park|National Park Service]]. National Historic landmarks may be publicly or privately owned, in contrast with National Parks (which are all publicly owned), and roughly half of the recognized NHL sites are privately held. |
| | [[Ronald Reagan]] is apparently not associated with any National Historic Landmarks, while the birthplace of [[Richard Nixon]] is a National Historic Landmark in [[California]].<ref>https://web.archive.org/web/20121008160438/http://tps.cr.nps.gov/nhl/detail.cfm?ResourceID=1078&resourceType=Building</ref> At least five National Historic Landmarks in Illinois are connected with [[Abraham Lincoln]]. | | [[Ronald Reagan]] is apparently not associated with any National Historic Landmarks, while the birthplace of [[Richard Nixon]] is a National Historic Landmark in [[California]].<ref>https://web.archive.org/web/20121008160438/http://tps.cr.nps.gov/nhl/detail.cfm?ResourceID=1078&resourceType=Building</ref> At least five National Historic Landmarks in Illinois are connected with [[Abraham Lincoln]]. |