A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

America's only nuclear missile silo open to the public.

This spectacular track has run continuously since 1882.

Golden Gate Park's historic collection of plants.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

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

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

The Grand Canyon of Texas.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

The final resting place of a space program monolith.

Small museum packed with artifacts recovered by the man rumored to be the real-life inspiration for Indiana Jones.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

When ecosystems collide in the arid Southwest.

An extraordinary mixture of natural beauty and man-made phenomena.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

This quiet park's strange sedimentary spires were named after Kodak's color film.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Canyon walls shrouded in ferns.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.