The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

This little-known relic crypt holds stolen parts of a Roman Empress.

18th century underground pilgrimage site, dedicated to a Saint that did something...

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

Saintly bones pressed into a wax effigy of a Catholic superstar.

A museum of magic with a Sadist past.

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

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

A 400-year-old church covered floor to ceiling in ex-voto offerings from the faithful.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

The oldest stone house in Paris was built by its most famous alchemist.

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

The home of the morbid art of corpse plastination is open for visitors to view the fascinating, but stomach-churning process.

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

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

A house of bones — but nobody is quite sure to whom they belong.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

Museum about life, death, and cannibalism in the Stone Age.

Willy Wonka would love this weird half-a-home.

Secret Swing.