This summer, consider sleeping under a glittering sky untainted by light pollution. These spots are guaranteed to be gorgeous by the International Dark-Sky Association.
CLAYTON LAKE STATE PARK, NEW MEXICO
Fish, boat, and see preserved dinosaur tracks during the day. View Venus, Mars, and Saturn from your campsite at night.
CHERRY SPRINGS STATE PARK, PENNSYLVANIA
Stretch out atop a 2,300-foot mountain surrounded by forest for a 360-degree view. Preregister for an observation dome.
NATURAL BRIDGES NATIONAL MONUMENT, UTAH
The world's first International Dark Sky Park keeps things pure by using 13-watt bulbs for its pathways. Pitch your tent at one of the several campgrounds on site.
THE HEADLANDS, MICHIGAN
This 600-acre tree-filled park rests along 2 1/2 miles of northern Lake Michigan, where you can take starry cruises. Rent one of two guest houses to stay the night.
The iStellar app ($9, itunes.com) IDs major stars, planets, and constellations based on your location.