Here's the park that has some history to appreciate: it's the fifth oldest state park in the United States. The Crater Lake that we see today is actually a caldera, the remnant of what was once a volcano, now destroyed. This is the only park in the state of Oregon and it also houses the United States' deepest lake. Many flock to the caldera for pictures of the many colors that the lake can turn from the sun and the weather.
Zion Canyon is a menacing but breathtaking force that cuts powerfully through the whole of Zion National Park. Up by the Virgin River you can see how the canyon cuts through the beautiful red, orange and tan colors of the Navajo sandstone. The Colorado Plateau and the Mojave Desert areas add a unique and varied amount of wildlife to the park. It's truly a diverse area full of colors and intense landscapes, perfect for picture taking and exciting hiking experiences.
Montana's Glacier National Park is the meeting place of various geographical entities as well as many different species of wildlife. Glacier is comprised of two different mountain ranges, over 100 lakes, and hundreds of kinds of animals as well as thousands of kinds of plants. Chief Mountain is one of the many iconic parts of the park, as well as the two threatened species that call the park their home: grizzly bears and Canadian lynx.
Sequoia National Park and Preserve is pretty upfront about what it offers: the giant Sequoia forests dominate the park with their size and beauty. The world's largest tree is also found here, named General Sherman tree. If you've never been out to California to see these natural wonders, then this is a must-see. Set aside enough time to get over your initial shock at their grandeur, then time to walk, touch, and explore these magnificent trees the rest of your time in the park.
The focal point of this park is Mount McKinley, the tallest mountain in North America. There are over 6 million acres of forests, tundra, rock, glaciers and on the mountains you can of course always find snow. It's quite the diverse environment which offers plenty of recreational activities in the winter including dog sledding, cross-country skiing and snowmachining. Kahiltna Glacier is another spectacular reason to see the park, no matter what season it is when you visit.