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

Terrifically morbid cemetary and site of famous Paracelsus' grave.

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

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

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

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

This former insane asylum now holds a pathological anatomy museum.

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

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

Macabre museum devoted to historical Viennese murders.

These two giant boulders mysteriously perched on a 60-foot cliff may have been slung up there by a raging tsunami.

This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

A medieval church built up to defend its village.

A muddy alien landscape that is home to rare species of exotic plants.

The original resting place of Queen Cleopatra and Mark Antony's only daughter.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

A spectacular cave and a beguiling lake.

The hallucinogenic center of the ancient world.

Fascinating town where normal life interfaces with the occult.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.