A writer's tiny retreat built from salvaged shipwreck timbers.

In pastoral England, a plaque marks where an imaginary community addressed the problem of combat mortality.

The world's smallest commercial theater is set up in what was once a urinal for Victorian men.

What can compare to the comforting sound of 10,000 toilets running?

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

White llama terraces dazzle in Peru's "other Machu Picchu."

A monument to the "father of modern warfare" Gustav II Adolf.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

The world's only complete colossal squid specimen is on display at the Te Papa Museum.

A bronze kitty adorns the grave of the polar explorer who brought the original feline to the Antarctic.

The world's second-largest excavated hole.

WWII artifacts, including the building itself.

Man-made cave with enigmatic carvings, some say made by the Knights Templar themselves.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

This crumbling headstone commemorates the first death by tiger in Britain's history.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

An Aztec snake god has taken the material form of an apartment complex.

One poet's handmade, anachronistic home.

The largest of London's subterranean rivers and once a mad, bad center of London life.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

Hidden beneath the streets of London is a secret subway that only carried mail.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

The ancient latrines of the Greeks, in all their public glory.