This sublime architectural marvel is a rare example of an expressionist church.

Home to 200 plaster casts of Scandinavian proboscises.

The gutted remains of this Estonian mansion are a monument to a tragic love.

The only things left in this abandoned Latvian graveyard are a mysterious stone and a ghost story.

A 200-year-old collection of medical paraphernalia in a historic house.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

A museum dedicated to the history of psychiatric treatment featuring a gallery of art made by patients.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

This Neapolitan exhibition hall grants weird and wonderful insight into the intricacies of human biology.

An eerie, little-known Neapolitan museum filled with preserved human remains.

The second oldest anatomical theater is housed in a museum of curiosities.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

Macabre museum devoted to historical Viennese murders.

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

The beautiful baroque library of the Hapsburg empire.

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

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

The only microgravity tower in Europe can produce nine seconds of weightlessness.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.