10,712, 674 visitors (2015)

Great Smoky Mountains, located in North Carolina and Tennessee, is the most-visited U.S. national park. It still retains an enchanted quality, a place where emerald moss carpets boulders and a dreamy, “smoky” mist recalls the region’s Cherokee name, Shaconagay, which means “land of the blue smoke.” To read more about all of the 59 U.S. national parks, click here.