A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This 50-foot-deep sinkhole created in the 14th century is home to rare plants and fungi.

This almost-forgotten underground dungeon housed several convicts over the years, including Caravaggio.

The Jesus tree of Malta bears a striking resemblance to Christ on the cross.

A centuries-old forgotten underworld lies beneath Malta.

This constantly evolving art space saved an Italian town from its own crippling reputation.

A petite white lighthouse perched on the ancient core of Stromboli Volcano.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

Haunting graffiti left by prisoners of the Spanish Inquisition.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

A study of Fascist era Art Deco design in Italy.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

This Arabesque Italian castle was built with a primitive, if ingenious, air-conditioning system.

An eccentric home in Sicily turns heads on a regular basis.

A grotesque collection of wax limbs depicting the symptoms of venereal disease.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

This ancient hydrological marvel is now the base of a modern outdoor cinema.

Gorgeous views of Italian mountains and valleys form the backdrop of this unique open-air theater.

Mysterious tombstones thought to be remnants of Atlantis.

Windblown rock formations in an ancient Roman quarry.

Crushed coral and crystals give the sand its signature coloration.

Stalactites and stalagmites in a beautifully lit cave.