Arizona
Features the Grand Canyon, Sedona, Petrified Forest, and other sites.

California
From the Redwoods to Death Valley, Mount Shasta, Yosemite, and many other points of interest.

For San Francisco, go here.

Colorado
Includes Rocky Mountain National Park, Black Canyon of the Gunnison, Dinosaur, Mesa Verde, and Great Sand Dunes National Monument.

Idaho
Featuring Craters of the Moon and other unique natural features.

Montana
Highlights the western part of the state with Glacier National Park and other localities.

Nevada
Featuring Great Basin National Park, Red Rock and Valley of Fire State Parks, with a link to lightning over Las Vegas.

New Mexico
Here are some views of Bandelier National Monument, El Malpais National Monument, and Carlsbad Caverns National Park.

Oregon
From the Columbia River Gorge to Crater Lake, with views of the Oregon Cascades and the lava lands to the east.

Utah
Features the canyons of the south, including Zion, Bryce, Cedar Breaks, Canyonlands, and Arches, as well as other notable localities across the state.

Washington
Views of Olympic National Park, Mount Rainier, Mount St. Helens, North Cascades National Park, and more.

Wyoming
Highlights Yellowstone and Grand Teton National Parks, with views of other points of interest.