The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

This Idaho state park boasts the tallest single-structured sand dune in North America.

This set of hot springs also comes with fantastic views.

Home to the deepest rift anywhere on Earth.

These strange carved boulders in a forested canyon resemble tiny stone villages.

A beautiful red-faced slot canyon in northern New Mexico.

This centuries-old pueblo church houses the body of a Franciscan friar who is said to be a rare "incorruptible" corpse.

The building stands within a quiet, postcard-perfect New Mexico village.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

A unique geological area spiked with wind-carved rocks that resemble teepees.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A breathtaking 19th-century trail overlooks Lake Tahoe.

Singing sand that stands as the final remains of an ancient lake.

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

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

The drama of nature in full effect in this Nevada State Park.

The longest living non-clonal organisms on Earth.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

This site marks the oldest known settlement in Campania, inhabited around 9,000 years ago.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.