The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

Mummified monks and the accidentally interred, in a 17th-century crypt.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Unique house covered in a nightmarish mural of demons, ghosts and monsters.