A crumbling ghost town with prime views of the dam that doomed it.

This basement museum explores the art and artistry of fascism.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

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

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

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

A former plague hospital turned medical museum.

A grassy pyramid named after a French battle.

Cat art as far as the eye can see.

The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

A curious collection dedicated to human and animal anatomy and pathology.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.