The Great Smoky Mountains National Park in Tennessee is again named best national park in the United States accordng to a recent study shared by online publication, Travel Lens. Travel Lens, a travel says in its “The Best National Parks” study that they looked at the number of recreational visitors (in 2021), the entrance fee, the distance to the closest city, and the percentage of reviews that mention the word, “beautiful” in order to collect its list of best national parks in the U.S.