Come one come all and visit any of the United State's 392 national parks during National Park week (April 17-25) for FREE. That's a whole week when you can visit your favorite national nark, or a national park that is not yet your favorite because you've never been there, but that could become a favorite.
But national park week is not the only time you can visit a national park for free. September 25, Public lands Day, and November 11, Veterans Day, you can also visit National Parks for free. Plan your visit now!