If you're into health and haven't been to a hot spring, we've pulled together some you'll definitely want to explore ...

Traverse 330 steps on the way to such distinctive chambers as the “Devil’s Kitchen” and the “Crystal Vault.” Wild caving ...

Archaeologists have unearthed a treasure trove of artifacts frozen in time deep within a West Texas cave, including potentially the oldest intact weapon system ever found in North America.

Most people think of visiting big cities, national parks, and beaches when they plan a U.S. trip. There’s hardly anyone who’s ...

Sheer drama. That's what the Great Sand Dunes are. Starkly beautiful desert dunes set against a backdrop of pretty, ...