To make it easier to experience America’s Great Outdoors, the National Park Service is waiving entrance fees, so visitors can enjoy all 392 national parks for free April 17-25, 2010. In addition, many national park concessioners are offering special promotions that are certain to add to your fun.

With 392 parks to choose from, figuring out where to go can be a daunting task. To help with your decision, Moon staffers have put together a list of our 15 favorite national parks:

We seem a bit biased for the western parks. Tell us, what are your favorite national parks?

Travel map of Yellowstone and Grand Teton National Parks

Yellowstone and Grand Teton