This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

A cluster of granite granaries perched on stilts.

The corpse bride of Portugal.

This small chapel is built of human bones and decorated with a golden skeleton.

A unique seaside cave where Aleister Crowley faked his own death.

At just six feet two inches deep, it is said by Guiness and Ripley to be the world’s narrowest freestanding office building.

This chimerical bridge/tunnel appears to dead end right into the sea.

A tiny rural community in Switzerland was home to one of history's most shocking murders, and led to the banning of Absinthe for nearly a century.

Over 12,500 words are scrawled across each room of this historic plantation house and no one knows why.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

Internationally recognized group that works to protect the wolf and educate the public about its plight.

Over 120,000 curious objects that have shaped our modern world.

An abandoned water sports stadium that has become a haven for graffiti and decay.

A monument celebrating the idea of reaching inaccessible places.

A swamp that was the site of prehistoric water burials also managed to preserve its corpses for millennia.

A secret, rocky playground hidden amongst the plain white beaches of the Florida coast.

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.

This home is decked out like a psychedelic explosion of colors and bowling balls.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Walk 2,300 feet above the ground on the "Troll's Tongue."

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

This beautiful grotto is one of those places where you can't believe you're just outside Austin.

This eclectic, mosaic-clad home includes a bamboo ping-pong loft and a "Whispermaphones" intercom.