Not all national parks charge for entry. These 12 are free.

From Great Smoky Mountains to North Cascades, here are 12 national parks you can drive to and visit without paying an entry ...
Chattanooga Times Free Press

10 awe-inspiring caves to visit in the U.S. (one's not far from Chattanooga)

You may not realize that the U.S. is filled with hidden, mysterious caves. Several are part of the national or state parks, and they're worth the excursion. Whether you are a thrill seeker looking for ...
Week& on MSN

Visiting Salt Caves Is All the Rage—But Are They Actually Good for You?

Walking out of the Santa Barbara Salt Cave in Santa Barbara, California, my fiancé, Jordan, and I both felt salt on our lips—much like you do when you get out of the ocean after a long swim. Made from ...