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

Harder layers in colorful sandstone weather out as prominent “fins" and even more intricate and bizarre shapes.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

The rocks in this arid basin leave trails of movement behind them.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

A massive hydrovolcanic explosion left a half-mile wide crater in Death Valley.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

This giant temperature attraction created some giant electric bills.

A lawless town deep in Death Valley was famous for its riches and death rate turned YouTube famous.

This old mining town, deep in the California desert, has a year-round population of one.

This desert oddity hides in plain sight thanks to a cartographic error and a desert explorer with a punny sense of humor.

One of the ghostly stops along Route 66.

This large pile of traveler-curated rocks by the dry lakebed is a longstanding tradition on the Old Mojave Road.

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.

The ghost town that ended up on Ebay.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

A remote field of nearly pristine sand dunes in the heart of the Mojave Desert.

One of the most unusual geological features, recognizable from a dozen hit movies.

A hard-to-reach oasis in a desolate corner of Death Valley National Park.

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

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

Nearly 300,000 acres of wildlife, natural splendor, and a hidden ghost town have been designated a national monument.

An Ancestral Puebloan ruin that appears to burst into flames in the sunlight.

An eerie natural formation that looks right back at you.