I've been to all 63 major US national parks. These are the 6 I always tell people to visit in the fall.

In my opinion, Rocky Mountain National Park is one of the best parks to visit in the fall. Emily Hart After visiting all 63 major US national parks , I think some are best experienced in the fall. In many of the parks, the fall months bring fewer crowds and cooler weather. In my opinion, the fall is the best time to visit parks like Acadia and Cuyahoga Valley. Summer is winding down, but that doesn't mean national park adventures have to end. In fact, many of the 63 major US national parks are at their best during the shoulder seasons. After visiting every single park solo, I'm often asked which ones are best to visit in autumn. Whether you're chasing vibrant foliage or simply cooler, less-crowded days, these six national parks truly shine this time of year. Acadia National Park offers stunning fall foliage.