Carlsbad Caverns National Park
Situated in the Guadalupe Mountains of southeastern New Mexico, far away from city lights — or any lights, really — Carlsbad Caverns National Park is a great place to view the night sky in a whole new way.
The park offers full moon and star party tours to take in the natural illumination, but the real highlights are the 119 absolutely marvelous caves formed by sulfuric acid that has eaten away at the limestone. The rock formations and stunning cathedral-like interiors are nearly without rival. Visitors can take guided and unguided tours of the Hall of the White Giant and the Spider Cave, and watch Mexican free-tailed bats burst from Carlsbad Cavern at dusk in the summertime.