5 Most Visited US National Parks

2. Grand Canyon National Park

Number of Visitors: 4,733,705

Grand Canyon National Park covers over 1,218,375 acres around the Colorado River and its adjacent areas in northern Arizona. The park covers the homelands of eleven federally recognized tribes. The Grand Canyon is one of the best illustrations of a canyon sculpted by water. It is also a World Heritage Site. The park offers hiking trails from one rim to the other, mule rides, and whitewater rafting.