Isle Royale National Park

Location: Michigan

Year Established: 1940

Area: 571,790.11 acres (2,314.0 km2)

Annual Visitors: 14,560

The largest island in Lake Superior is a place of isolation and wilderness. Along with its many shipwrecks, waterways, and hiking trails, the park also includes over 400 smaller islands within 4.5 miles (7.2 km) of its shores. There are only 20 mammal species on the entire island, though the relationship between its wolf and moose populations is especially unique.