A celestial window
© Sarah Quintans/Shutterstock
One of the more than 2,000 formations that give Arches National Park its name, Skyline Arch becomes a window to the Milky Way on a clear Utah night. Arches' dark skies and otherworldly landscape make it a prime destination for stargazing and night photography. Come daylight, the park offers a variety of outdoor activities, including hiking, horseback riding, and rock climbing.