A museum dedicated to the history and art of staying clean.

An architect's childhood fantasy treehouse made real.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

This rustic old building is said to be the most photographed barn in America.

One man's ambition created this psychedelic log home.

The tiniest tiki room in San Diego.

Dozens of feral felines rule a segment of Hollywood's only graveyard.

Most famous work of one of Frank Lloyd Wright's sons.

This ramshackle ghost town is comprised of mining-era buildings collected from around the region.

The abandoned coal loading dock is a canvas for unsanctioned art.

This museum glorifies the humble potato.

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

A house carved into a rock in the 1940s.

The crumbling structure is a rare surviving relic of the area's bygone mining industry.

Exotic feline breeding compound and conservation center.

A magnificent, reportedly haunted mansion built for a composer by Spiritualists.

Abandoned in 2009, this once popular resort destination now stands frozen in time.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

Collection of vintage trailers double as hotel rooms.

The world's largest military aircraft cemetery.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

A reproduction of earth's many biomes.

This cabin from the 1850s is one of the first structures built by Chinese immigrants in California.

On a barren hillside in the Yucca Valley, the recently restored Desert Christ Park has attracted pilgrims and kitsch hunters for over 50 years.