An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Inside this museum, visitors venture through ghost stories entrenched in Icelandic folklore.

Architectural monsters are devouring this palace's every door and window.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

Another entry into the world of Edinburgh's pop-up artworks.

Many of Edinburgh's more unsavory characters spent their final days behind this door while awaiting their executions.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

The fountain marks the area where hundreds of accused witches were burned at the stake.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

A burial vault located under Tiber Island in the middle of the Italian capital.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

This large, circular tomb is the final resting place of the first emperor of Rome.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

One of the most important yet well-hidden museums dedicated to the history of medicine.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

A collection of objects supposedly singed by the hands of souls in purgatory.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This museum dedicated to divination also honors a local 10th-century prophetess.

A genuine Little Shop of Horrors.

The final resting place of one of the most influential modern occultists.

The last known resting place of the king who united England.