A bust of the entertainer and politician sits in an alcove at the Palm Springs Airport.

A natural dome made of volcanic glass in Inyo National Forest.

The longest continuous lava tube in Oregon.

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

Not your typical pet cemetery.

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Mexican food and folk art.

This rusted car found in Petrified Forest National Park's Route 66 exhibit may be the most photographed abandoned car in the country.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

A Wild West jailhouse that slid down the mountainside.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

This mesmerizing and surreal landscape features intricate patterns of white and red sandstone.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

Dramatic river bend surrounds a natural red-rocked pedestal.

This unique art installation used boiler tubes from a decommissioned power plant to resemble Antelope Canyon.

More than a century old, this trading post resides in the Navajo Nation.

A mysterious spirit totem at the edge of Navajo lands.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ancient pueblos built into the base of a natural canyon wall.

More than 25 fully functional scale replicas of famous lighthouses dot the shores of Lake Havasu.

In 1975, a forestry worker in Arizona claimed to have been abducted by a UFO.

In one of the hottest parts of the Mojave Desert, shallow bedrock forces the typically dry Mojave River to the surface in this canyon, providing a vital oasis for humans and wildlife.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.