"Best Parks for Jaw Dropping Scenery," showcases the Grand Canyon and Glacier Park.
"Best Parks for Creature Features," features grizzly bears in Alaska's Katmai Park and sea lions of the Channel Islands.
"Best Parks You've Never Heard Of," reveals a 12,000-year-old tree, awesome lava fields, steaming craters, and surreal landscapes.
"Best Freaks of Nature," presents hoodoos in Bryce Canyon and bizarre cave pearls in Kings Canyon.
"Best Parks for a Deep Freeze," spotlights Olympic Park's one million acres of powdery scenic ski slopes and a glacier cave in Kenai Fjords National Park.
"Hottest Parks," highlights the world's most active volcano and the famous Old Faithful.
Isle Royale National Park, located on the largest island in Lake Superior, and North Cascades National Park, which boasts 127 lakes and 400 miles of trails are spotlighted.
The best lakes, ponds, rivers and waterfalls in the national parks are spotlighted.
Saguaro National Park in Arizona and Theodore Roosevelt National Park in North Dakota are visited.
A look at sunrises and waterfalls in America's national parks, including Zion National Park in Utah and Death Valley National Park in California and Nevada.