The commemorative stone column conceals a secret laboratory.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Artists have long been drawn to these atmospheric 12th-century ruins.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

Protecting the dead from opportunistic body snatchers.

The most loyal of little dogs, or a Victorian era publicity stunt?

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

A sweet symbol marks the place where torturous executions were once carried out.

A six-ton wedding present for the King of the Scots.

Once a black market electronics marketplace, now an otaku shopper's paradise.

After being lost for decades, this striking mural depicting the atomic bomb covers the wall of a busy Tokyo metro station.

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

Not quite the menace it once was, this monster still has some chops.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

Hot springs monkey spa in the middle of Hell's Valley.

A battle between nature and architecture in the Cambodian jungle.

Hoax, mistake, or evidence of dinosaurs in human times?

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.

Ancient snack bar of the Roman Empire re-opened.