Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

One man's homage to the sun continues to grow like a glass fractal.

A winding path built in secret on the edge of the continent.

Resting place of Hollywood's immortals is also site of summer film screenings.

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

America's most famous piece of self-built architecture.

A trash dump made beautiful by nature's power.

The ghostly remains of an accidental sea.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

A one-of-a-kind collection of a unique medium.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

A 140-year-old castle with underground caves hidden in San Francisco.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

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

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

An artsy hidden staircase leads to breathtaking views of San Francisco.

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

A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

After his presidency, George Washington planned to live only a few blocks from the Capitol building.

Disks are rolled out onto the south lawn to absorb the impact of Marine One's wheels like giant coffee coasters.