Whether you are interested in preserving parklands, maintaining areas that depict geological changes or saving monuments and lands that tell our American story, the National Park Service provides an enormous service to the American people by safeguarding these lands as part of our national heritage.

National Parks Week begins Saturday, when all 397 parks around the U.S. offer free admission and special programs to lure visitors. To get you warm...

You don't have to plan a trip months in advance to secure a campsite under the stars, have a hiking trail and a summit peak all to yourself or find out where the wild things are this summer.

What better way to spend Earth Day 2012 than by taking a trip to one of the world's relatively undiscovered national parks?