This geothermal hot spring hides beneath a slowly growing mineral dome.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

World's largest collection of serial killer artwork and other macabre exhibits.

A psychedelic labyrinth on the San Francisco bay.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A huge musical instrument played by the ocean.

Natural rock water slides hidden in the remote forests of northern Idaho.

After this former brothel closed, its interior remained almost frozen in time.

Tucked away on a scenic trail, a modest memorial honors one of the greatest writers of our time.

The largest outdoor art gallery in the Northwest United States.

The mayor made the declaration in 2004.

A black cottonwood gets a second life as a home for books.

A wild west land agreement was etched right onto this historic Idaho stone.

A small section of Boise, Idaho maintains the unique culture and traditions of the Basque people.

Despite his legacy of work in Spain, Cuba, and Florida, the larger-than-life writer's grave is a simple affair tucked in an Idaho cemetery.

See just what life was like in a 19th-century prospecting town.

Sweet Willy, at 30 feet tall, is the world's biggest beagle.