Isle Royale National Park is on a car-free island in Lake Superior with lots of free camping.

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Whatmakes a national park great?

The number of visitors (or lack thereof)?

Coastal areas of Isle Royale were once submerged beneath prehistoric lake waters, and contain many tumbled boulders and other large rocks.

Rocky coastline of Isle Royale National Park in Michigan.Credit:Posnov/Getty Images

(We’re looking at you Gates of the Arctic.)

The park scored 7.69 out of a possible 10 points in the survey.

All campgrounds for parties of six or fewer are first-come first-served.

Isle Royale National Park is closed to all visitorsbetween Nov. 1 and April 15.