The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

"Only the devil could play golf here."

Quite simply the largest tree in the world (by volume).

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

The first life claimed by this record-breaking peak wasn't lost to exposure or a fall but rather lightning.

Towering basalt columns, a creation of fire and ice.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

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

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

Bits and pieces from the ill-fated Donner Party's winter cabins.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The stone circle honors the 19 firemen who perished during the Yarnell Hill Fire.

One of the largest open-pit copper mining operations in the entire country.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

An off-the-beaten path cave with an underground lake.

An incredible airplane graveyard sits outside this small museum dedicated to preserving aviation history.

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.

Legend says train robbers stashed their gold within the depths of this unusual cave.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.