National parks also make the heritage list. What is this one, the most visited national park in the U.S.?
Answer Great Smoky Mountains National Park
With 11 million annual visitors, the Great Smoky Mountains is the most visited national park in the United States. As part of the Appalachian Mountains, the Smokies stretch across 187,000 acres east of the Mississippi. Throw on your hiking boots, because there's plenty of wide-open space to wander.
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