It's no secret that some of the best national parks draw a big crowd. The prospect of getting into the great outdoors with a thousand other people shouldn't hold you back, because we have a simple solution: Try the shoulder season. In the spring, fall, and early winter months these parks are not only less crowded, but we think even more beautiful than they are in during peak season.  Scroll through our slideshow to see our favorite parks to visit during the off-season, and get ready for some quiet time in the wild.