The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

A beautiful geyser under environmental threat.

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

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The first declared National Monument in the United States.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A walk through the historic city center, under the streets of Seattle.

The ghostly remains of an accidental sea.

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

A bizarre house filled with an astounding array of collections.

The rocks in this arid basin leave trails of movement behind them.

Dramatic river bend surrounds a natural red-rocked pedestal.

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

Rippling sand dunes frozen in the Arizona rock.

This giant roadside goose has been hailing travelers into a small Ontario town for over 50 years.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

Historic site where Native American hunters once trapped and killed buffalo.

A sobering scientific reminder of the human damage caused by the advent of the nuclear age.

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

Few other hotels can rival the grandeur of the Castle in the Rockies.

A clay house decorated with ceramic chips in Tianjin.

Genitals, claws, and faces are served at this questionable Beijing eatery.

The once highest point in China blends symbolic design with a kick of adrenaline.