A replica of where the Last Supper was held.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

A surreal botanical garden with an even more surreal tour guide.

The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

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

Does this church in Naples hold the true tomb of Vlad the Impaler, the notoriously cruel figure who inspired Bram Stoker's Dracula?

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

This magical-looking island is notorious for the misfortunes suffered by its owners.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

The mummified heart of Louis XVII, the lost dauphin of the French Revolution.

Shattered columns and Egyptian pyramids outside of Paris.

This pair of running lions engraved on animal bone is one of the earliest artistic depictions of big cats.

One of the last realized projects of an influential, self-taught, French Modernist architect Jacques Couëlle.

Perfume museum and library.

This crumbling, graffiti-covered mansion sits tantalizingly within reach of the proletariat who frequent a public park.

Experience architect Le Corbusier's modernist design for living in the home he designed for himself.

The largest refracting telescope in Europe is housed on the grounds of a former French castle.

The only remaining collection of flayed figures made by French "madman" Honoré Fragonard.

1920's reinforced concrete church by architect Auguste Perret changes the face of modern design.

This stunningly massive housing complex is a go-to filming location for dystopian sci-fi cinema.