Chaco Culture National Historical Park
LocationSan Juan County and McKinley County, New Mexico, US
Coordinates36°04′N 107°58′W / 36.06°N 107.97°W / 36.06; -107.97Coordinates: 36°04′N 107°58′W / 36.06°N 107.97°W / 36.06; -107.97
Area33,977.8 acres (13,750.3 ha)
Architectural style(s)Ancient Puebloan
Visitors39,175 (in 2011)
Governing bodyNational Park Service
WebsiteChaco Culture National Historical Park
UNESCO World Heritage Site
Official name: Chaco Culture
TypeCultural
Criteriaiii
Designated1987 (11th session)
Reference no.353
RegionEurope and North America
U.S. National Register of Historic Places
Typehistoric district
DesignatedOctober 15, 1966
Reference no.66000895
Former U.S. National Monument
DesignatedMarch 11, 1907
DelistedDecember 19, 1980
Designated byPresident Theodore Roosevelt
U.S. National Historical Park
DesignatedDecember 19, 1980
N.M. State Register of Cultural Properties
DesignatedMay 21, 1971
Reference no.57