European castle ruins in an American state park are actually the product of death and grief.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A castle built by an eccentric medieval enthusiast in rural Ohio.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

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

A ghost town at the airport is now a refuge for blue butterflies.

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.

One man's ambition created this psychedelic log home.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

A clear blue swimming hole with hidden caves, still unexplored.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

Historic funicular railway, believed to be the shortest railroad in the world.

Canyon walls shrouded in ferns.

A very classy 1920s-era bar right in Grand Central Station.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.