Remnants of an exploded schooner and wrecked submarines form a breakwater.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

Fascinating town where normal life interfaces with the occult.

Occult books, tarot, oddities.

An alchemist's "magic door" stands in the middle of a Roman park.

A pagan tradition of draping trees with rags eerily lives on.

Striking occult iconography on a medieval German church.

The attic of a four-century-old canal house hides a clandestine church.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

This Scottish museum is the only one in the world to focus not on one religion but all of them.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

Hidden beneath the streets of London is a secret subway that only carried mail.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

A beautiful but toxic fountain of mercury.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A surreal museum of extraordinary industrial objects.

Goethe's "Faust" was inspired by these rock formations known as the "Devil's Pulpit" and "Witches' Altar."

An abandoned NSA listening post on Berlin's "Devil's Mountain."

This community on a small Venetian island has taken to painting their houses in bright neon hues.