"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

100 year tradition of fist fights, marked by marble footsteps.

An Italian ghost town that fought obscurity, until a mysterious illness brought it to its knees.

The world's most active stratovolcano is almost always erupting.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

Romans built the world's tallest artificial waterfall in 271 BC.

Bell tower juts out from a village buried under a lake.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

Secret refuge and museum of the Duke of Florence.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

A fairytale island floats in the middle of Italy's little-known Lake Orta.

One of the largest caves in the world open to the public.

Medieval torture techniques with a modern conscience.

One of seven Jewish catacombs in Rome and one of only two open to the public.

Walk through a fairytale in Tuscany.

The giant skeleton sculpture is surprisingly well-traveled.

The astonishing collection of an infamous criminologist.

An ancient artistic garden parlor full of hidden water wonders.

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

Venice's island of the dead.