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

Archaeologists believe this panel of petroglyphs depicting descending sheep and other figures in Glen Canyon are 3,000 to 6,000 years old.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

When ecosystems collide in the arid Southwest.

No one knows exactly how deep the world’s deepest geothermal hot spring is.

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

What is the Thing?

Stairs often replace streets on the steep slopes of this old mining town.

A historic hydroelectric power plant serves as the unusual backdrop for a public park.

Along this stretch of Indiana roadway resides a giant insect composed entirely of scrap metal.

This relic of transportation history still stands in this Indiana city.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

Run by members of the Tohono O'odham Nation, this community farm nurtures traditional desert cultivars.

This church on a Tohono O'Odham reservation has stood since 1797.

See massive fossils that are over 200 million years old in northeastern Arizona.

This reclusive Hopi village in Arizona has been continuously populated longer than anywhere else in America.

A mysterious spirit totem at the edge of Navajo lands.

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

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

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.