This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

Museum covers every step of the chocolate-making process, from cultivation to the finished product.

A gender-bending antihero's grave, where lies the inspiration for both book and film.

This former steel and coal plant is now a neon-lit industrial fantasia.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

Medical history with an amazing, if frighting, collection of wax diseases on display.

This ghost town in Belgium will lose its street art when it ceases to exist.

This impressive collection of skulls and bones was gathered by an ex-zookeeper who took advantage of a pig plague.

This massive collection of taxidermy is full of specimens collected by missionaries during their international travels.

This abandoned Belgian fortress is purposefully being left to nature.