No doubt you’ve heard of the Great Smoky Mountains, the Grand Canyon and Yosemite. They were among the most visited national parks in 2015.
Last year, more than 307 million people went to all 59 national parks, a new record. But less than 1 percent of them went off the beaten path.
“It's bit harder to determine the least visited park units as some of the smallest NPS units do not record visitation,” according to Jeremy Barnum, a public affairs officer at NPS.