National parks are great any time of year (yes, even in winter ), but if you don’t want to shell out for the park pass, take advantage of the National Park Service’s fee free days this year. Here are all of them.
Unlike 2016, when there were two free weeks in addition to the normal days off to celebrate the National Park Service’s centennial year, 2017 has just ten free days. Most of the dates are in spring or fall, so you can enjoy the parks when they’re blooming or changing to fall colors.