A three-story, three-dimensional hobo clown in a tutu welcomes CVS shoppers.

Abandoned Air Force base that has fallen into disrepair.

One woman's Viking Castle on Lake Tahoe.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

This old mining town, deep in the California desert, has a year-round population of one.

"Only the devil could play golf here."

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

This impressive tunnel was dug entirely by hand over the course of 36 years.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

The final resting place of a space program monolith.

The ghost town that ended up on Ebay.

Explore 10 acres of environmental sculptures.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Less a museum than a bizarre fantasy world created by artists and engineers.