<P> Grand Canyon National Park , located in northwestern Arizona , is the 15th site in the United States to have been named a national park . The park 's central feature is the Grand Canyon , a gorge of the Colorado River , which is often considered one of the Wonders of the World . The park , which covers 1,217,262 acres ( 1,901.972 sq mi ; 4,926.08 km ) of unincorporated area in Coconino and Mohave counties , received more than six million recreational visitors in 2017 , which is the second highest count of all American national parks after Great Smoky Mountains National Park . The Grand Canyon was designated a World Heritage Site by UNESCO in 1979 . </P>
<P> Grand Canyon National Park , located in northwestern Arizona , is the 15th site in the United States to have been named a national park . The park 's central feature is the Grand Canyon , a gorge of the Colorado River , which is often considered one of the Wonders of the World . The park , which covers 1,217,262 acres ( 1,901.972 sq mi ; 4,926.08 km ) of unincorporated area in Coconino and Mohave counties , received more than six million recreational visitors in 2017 , which is the second highest count of all American national parks after Great Smoky Mountains National Park . The Grand Canyon was designated a World Heritage Site by UNESCO in 1979 . </P>
where is the grand canyon national park located
where is the grand canyon national park located
northwestern Arizona
northwestern Arizona