The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

Living trees form the structure of an open-air palace.

A monument to the "father of modern warfare" Gustav II Adolf.

The final resting place of many of Germany's most famous communists.

A city's controversial tribute to its founder depicts townspeople flashing their bare behinds.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

In this coastal town, the time-honored tradition of reenacting the struggle between the Christians and Moors includes the arrival of the Moorish fleet.

This 47-story "M" needed 20 years to be completed

This massive blockhead sculpture hides an entire library.

The location of the last witch trials of Italy, known as "The Salem of Europe."

This winding road through an Italian canyon may be the most scenic drive in the world.

A sunken idol welcomes parishioners to Davy Jones' Locker.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

Massive galleon from a box-office bomb docked in Genoa.

Legends surround an ancient tree trunk riddled with nails for good luck.

Pilgrimage site for star-crossed lovers.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

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

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

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”