Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

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

Venue for strange sideshow displays and musical acts.

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

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

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

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

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

The mummified relics of an American missionary.

These Nubian pyramids are strange and unique, even by pyramid standards.

An unrealized dream to wirelessly electrify the entire Earth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A museum devoted to bringing to light forgotten or neglected histories through exhibitions, education and public programming.

The largest stone moai on Rapa Nui.

Gutted airplanes slowly decay in a Florida field.

Art Deco urban decay at this historical building.

A village on the east coast of England that has almost completely eroded into the North Sea.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

Ruins of a Carnegie family mansion on Cumberland Island.

The remains of a hospital ravaged by fire, once a progressive place of innovations for disabled children.

Artworks by loners, prisoners and the criminally insane.

A self-built mosaic house and sculpture park.