The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

Hidden beneath the streets of London is a secret subway that only carried mail.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

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

Just one of the Italian corridors vying for the title of the country's narrowest.

The construction of a new church near Venosa was started in the 11th century, but never finished.

A founding document of the European Union was written on an island where Roman emperors once banished women.

This unusually shaped fortress houses a blend of centuries-old frescoes and modern art.

Built to be the ideal penitentiary, this abandoned panopticon saw several revolts and even a prisoners' coup.

A single column facing the sea is all that's left of one of the most important temples of Magna Graecia.

A town saturated in Italian rationalist architecture was once marshland drained by Mussolini.

A small Byzantine church lost in the middle of the mountains of southern Italy.

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

Suffocating dogs was a common spectacle in the fumes of this noxious cave.

A quiet Sicilian village is home to a cafe that had an important role in "The Godfather."

This Italian ski resort rose to fame when Benito Mussolini was held prisoner there and then rescued by the SS.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

A fascist-era rural village abandoned since the early 1980s.

A medieval wash house where people washed clothes in a river allegedly formed by the tears of a mourning nymph.