The Grand Canyon is one of several National Park areas considering a fee increase. Yaki Point on the South Rim, shown here, is a great place to watch the Grand Canyon change colors as the sun sets.
Grand Canyon National Park —
The Grand Canyon is one of several National Park areas considering a fee increase. Yaki Point on the South Rim, shown here, is a great place to watch the Grand Canyon change colors as the sun sets.
Courtesy Michael Quinn/National Park Service
Rafting the Colorado River through the Grand Canyon can be a day trip or up to 25 days, depending on your pleasure and how much time you have.
Grand Canyon National Park —
Rafting the Colorado River through the Grand Canyon can be a day trip or up to 25 days, depending on your pleasure and how much time you have.
Courtesy Mark Lellouch/National Park Service
Cold fog trapped in Grand Canyon by a "lid" of warm air produces a rare event known as an inversion. <a href="index.php?page=&url=http%3A%2F%2Fwww.cnn.com%2F2013%2F12%2F03%2Ftravel%2Fgrand-canyon-inversion%2F">The inversion shown here</a> occurred in 2013.
Grand Canyon National Park —
Cold fog trapped in Grand Canyon by a "lid" of warm air produces a rare event known as an inversion. The inversion shown here occurred in 2013.
from erin whittaker/national park service
This view of Yosemite National Park's Half Dome from Cook's Meadow shows the glorious colors at sunset.
National parks worth paying more —
This view of Yosemite National Park's Half Dome from Cook's Meadow shows the glorious colors at sunset.
Kirsten Randolph/National Park Service
Walk through Yosemite's Mariposa Grove of Giant Sequoias to see the trees called the Bachelor and the Three Graces.
Yosemite National Park —
Walk through Yosemite's Mariposa Grove of Giant Sequoias to see the trees called the Bachelor and the Three Graces.
Kirsten Randolph/National Park Service
Grand Prismatic Spring is one of the most fascinating spots at Yellowstone, which has an abundance of intriguing spots to explore. It's in Midway Geyser Basin, about 5 miles from Old Faithful. Sometimes, you can see the steam change colors because of the spring's bacteria.
Yellowstone National Park —
Grand Prismatic Spring is one of the most fascinating spots at Yellowstone, which has an abundance of intriguing spots to explore. It's in Midway Geyser Basin, about 5 miles from Old Faithful. Sometimes, you can see the steam change colors because of the spring's bacteria.
Wyoming Office of Tourism
Hikers should explore Yellowstone in groups of at least three, stay on designated trails, carry bear pepper spray and make noise as they hike to avoid surprising bears, rangers say.
Yellowstone National Park —
Hikers should explore Yellowstone in groups of at least three, stay on designated trails, carry bear pepper spray and make noise as they hike to avoid surprising bears, rangers say.
The red coloring in the arches at the namesake Arches National Park comes from sandstone with iron oxide.
Arches National Park —
The red coloring in the arches at the namesake Arches National Park comes from sandstone with iron oxide.
Courtesy National Park Service
The ephemeral pools, seen here in front of the Organ rock, fill with rainwater and are home to tiny ecosystems of plants and organisms.
Arches National Park —
The ephemeral pools, seen here in front of the Organ rock, fill with rainwater and are home to tiny ecosystems of plants and organisms.
Courtesy National Park Service
Great Smoky Mountains National Park is the most-visited national park in the country, with 9.4 million visitors in 2013.
Great Smoky Mountains National Park —
Great Smoky Mountains National Park is the most-visited national park in the country, with 9.4 million visitors in 2013.
Christine Hoyer/NPS
Right after sunrise is the best time to see active wildlife at Cades Cove in Great Smoky Mountains National Park.
Great Smoky Mountains National Park —
Right after sunrise is the best time to see active wildlife at Cades Cove in Great Smoky Mountains National Park.
Christine Hoyer/NPS