A warm desert spring holds one of the rarest species on earth.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

A half-acre utopia in the New Mexico desert features a graveyard, a game of horseshoes, a library, and a mailbox.

Some of the Old West's most notorious outlaws frequented this mining town.

The outcropping is graffitied with the name of the beloved musical Muppet television series.

This record-setting hydraulic dam in the Montana badlands was one of FDR's most ambitious public works.

The oldest badlands in North America, Makoshika State Park takes it name from the Lakota words for broken land.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

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

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

This oasis-like spring in the Sonoran Desert is home to unique, endangered species.

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

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

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

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

A remote desert lookout offers unparalleled views of the California badlands for those who brave the trek.

Malibu's first beach home features an astonishing trove of ceramic tiles.

French prisoners carved these boats from the bones of their meat rations.

Rusty pieces of metal jutting out of a breakwater are all that's visible of the 12,500-ton ocean liner that capsized just off the beach.