An island filled with hundreds of hanging, decomposing, decapitated dolls.

This professional clown's home is an outsider art wonderland.

A living art gallery painted on a canvas of Monterey pine trees.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

A garden in Lisbon filled with giant porcelain creatures.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

Picturesque intersection of witchcraft and ancient Christianity.

This small chapel is built of human bones and decorated with a golden skeleton.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

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

Houses are tucked between, on, and underneath giant boulders.

This hidden art nouveau gem was designed by an architect in search of a national style.

A fake Transylvanian castle houses a cathedral of antlers.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

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