An abandoned boat that's been stranded mysteriously for decades.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

Perhaps the most unique of any Frank Gehry design for one simple reason: Gehry himself actually lives here.

California's oldest wind harp represents a historic piece of America's Danish history.

Abortion, prohibition, religion, war, and fear all play a part in the history of this idiosyncratic Pacifica castle.

The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.

The show's fictional Korean medical camp was created in the Santa Monica hills.

First LEED-certified gas station in the United States.

A deserted hodgepodge of experimental structures designed by nearby university students.

Get up close to emus and ostriches, or buy their tasty meat.

Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

Legendary prop shop filled with one man's collection of scientific curiosities.

A Mysterious Masonic tomb in San Luis Obispo.

The ruins of the castle that chemicals built.

Acres of natural wonders left behind by a socialite-turned-gardener.

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

This burial pyramid in central Ireland is thousands of miles and thousands of years away from its Egyptian inspiration.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

The atmospheric road was never meant to be so creepy.

Northern Ireland's Brobdingnagian stepping stones.

The world's tallest box hedge is found in a delightful garden.

A retired military stronghold on the rolling green coast of Donegal.

On the Irish coast, 18 members of the Howard family are eternally resting in an Egyptian pyramid.