The remnants of an early automobile route across shifting sand dunes can still be found in the deserts of Southern California.

Since World War II people have been decorating this stretch of the Yuma desert with signatures arranged out of rocks.

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

This conservation area is also home to many of the region's desert tortoises.

The decaying adobe remains of an old homestead are just off the beaten path in Joshua Tree National Park.

Crumbling pink walls and murder memorials preserve the pioneer history of Joshua Tree.

The only thing stranger than stumbling onto these philosophical musings is the story of the homesteader who created them.

Colorful Native American paintings are hidden within this small cavern.

Hidden in the Santa Ynez Mountains off Highway 154, this tiny restaurant once served as a stagecoach stop.

Frank Lloyd Wright died a year before construction on his largest public project even began.

Bridges, terraces, and replicas of historic structures all built of rock and petrified wood by one man.

The longest continuous lava tube in Oregon.

A rugged lava field dotted with molds of the ancient pines that were growing when the volcano erupted.

A volcanic landmark located on an Ice age lake bed.

Massive crater in central Oregon.

A volcanic fissure over two miles long and up to 70 feet deep.

This massive mushroom has spent centuries eating its way across a huge swath of Oregon.

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

The site of the Wellington avalanche, one of the America's worst railroad disasters.

Tasked with beautifying a disused stretch of industrial land one artist filled a hole with grass.

The short-lived railroad town in central Oregon has been abandoned since the 1930s.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

A fine, large-aperture telescope available for public use.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.