A collection of objects supposedly singed by the hands of souls in purgatory.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

Architectureal fantasy quarter of Rome.

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

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Stripes of human ashes cover a back lawn in the most sought-after burial grounds in Paris.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

BDSM, 1930s Style.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

A modern-day Lascaux cave underneath Paris.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

Indents in the pavement are all that remain from a grisly death machine in Paris.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

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

A collection of human remains, animal body parts, and other macabre curiosities all legally for sale.

A unique collection of Science Fiction, Fantasy, and everything in-between.

Lost subway station nestled beneath Toronto's busy commuter line.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

Housing a morgue, rare and confiscated weapons, and autopsy remains, the Vancouver police museum displays the dark side of Canada.

A high point in Vancouver kitsch.