The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

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

The resting place for anonymous victims of the Danube's dark waters.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

This former insane asylum now holds a pathological anatomy museum.

One of the best collections of wax anatomical models in the world.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

Museum devoted to the artificial language of Esperanto.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

The final resting place for the remains of 143 Habsburg royalty.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Macabre museum devoted to historical Viennese murders.

The remains of the great moral philosopher reside in a university in London.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

This abandoned mansion has a window for every day of the year, and is a temple for ghost hunters.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.