This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

France's most famous cemetery, with some of its most curious tombs.

Notorious artist squat renovated into legal studios.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

A semi-scholarly approach to sex.

Tucked in the back of this amazing antique store is an important piece of medical history.

A terrific purveyor of natural history objects and curios.

World's largest collection of serial killer artwork and other macabre exhibits.

From Japan to Italy, this California park explores the world's cultures through their gardens.

Venue for strange sideshow displays and musical acts.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

An amazing collection of wax anatomical models and terratological models.

An extraordinary collection of 18th century anatomical waxworks.

This museum is rotten with a century of wax medical deformities.

Eighteen mummies have stood guard behind the altar of this tiny church since 1833.

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

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.

Anatomical cabinet holds unexpected treasures.