This deceptively beautiful island was once home to a German concentration camp and known as "Death Island."

The storefront of a ramshackle Parisian puppet theater.

A modern-day Lascaux cave underneath Paris.

Ninety years of Sydney buses under one roof.

Dilapidated ruins that once treated a notorious young serial killer, currently hosting vandals, squatters, and ghost hunters.

Australian Lake set aglow by Noctiluca Scintillans.

A tunnel dug through the side of a mountain by hand provides convenient yet death-defying access to a small village in China.