This South London cemetery holds the remains of more than 15,000 people.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The sign at the garden gate reads: "These Plants Can Kill."

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

The world's largest collection of witchcraft regalia.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

BDSM, 1930s Style.

Skeletons, medical artifacts, and other obscure and precious treasures all displayed in a wooden pharmacist's cabinet.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

The recovered bones of martyrs slaughtered during The Terror are on display in this church crypt.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

An ancient monastery, a locked room, and a mysterious book heist.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

Monsters and miniatures are held in equal esteem at this wondrous museum.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.