6 Incredible National Parks You Have to Visit
It's not all about geysers and mule rides out there. A few less familiar things to do...
6 of 6
6. Look Up and Say "Ahh": Chaco Culture National Historical Park
, New Mexico
After you've taken in the park's "great houses"—stone and wood buildings erected roughly 1,000 years ago by the Chacoans, an ancestral Pueblo people—crane your neck to enjoy one of America’s best stargazing sites. More than 99 percent of the park is a “natural darkness zone” with no outdoor lighting—optimal conditions for pondering the universe.