Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

An inconspicuous footbridge beloved by San Diego locals.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

Beneath a Virginia City bar is the entrance to an abandoned gold mine.

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

A strange mishmash of ruins and abandoned structures hint at the park's many lives.

A B&B on a Victorian lighthouse station in San Francisco Bay.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Hot springs monkey spa in the middle of Hell's Valley.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

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

Most-visited and most-photographed slot canyon in the American Southwest.

On the Oregon coast there is a natural hole that seems to be draining the sea.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

An emerald-green grotto just a short trip from Austin.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A terrific purveyor of natural history objects and curios.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.