Isle Royale National Park
This gorgeous park near Thunder Bay, Canada, is the largest island in the world’s largest freshwater body, Lake Superior. Though it ranks as the fifth least-visited park (14,000 annual visitors) in the nation, it has the highest backcountry use. It’s accessible only by boat or seaplane and is one of the few national parks to close in winter.
Cool Fact: The isolation makes this a unique bio-preserve. Isle Royale has freshwater clams, snails, and insects in sizes and densities not seen elsewhere since the 1800s (bring DEET). It’s also the only place where moose and wolves coexist without bears to balance atop the predator pole.
Don’t Miss: A boat tour around some of the park’s 400 satellite islands, and a backcountry camping trip.