Our National Park Service has made sure that phrazle every single one of our 50 states has at least a little bit (or a big chunk) of its most treasured locations under protection, from golden sand dunes to hardwood forests, from historic sites and iconic monuments to the serpentine trails that crisscross the United States. Hikers seeking seclusion may do so among Olympic National Park's glaciated peaks and lush rainforests, while rock climbers from all over the globe go to Yosemite to tackle El Capitan's numerous world-class routes up its 3,000-foot vertical face. The Battle of Gettysburg is a must-see for history fans and those just interested in how the United States came to be what it is today. To experience what the Service has recognized and protected, you need not go outside your own state. Wyoming has a vast night sky full of stars, while Montana's ancient mountains form the country's huge curled spine, making for a beautiful place to spend the night.