The sacristy of this church contains remains and relics of members of the Aragonese royal family.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

This tiny chapel withstood a massive mudslide and flash flood.

This uniquely designed bridge served as the city gate for Comacchio.

Tourists to the mountaintop Sicilian town often overlook its ancient fortifications.

This fountain is dedicated to the workers who perished constructing the Fréjus Rail Tunnel.

Climb the dead electric pylons of Messina.

What appears to be an ancient Roman temple is actually a Catholic church.

One of ancient Etruria's most spectacular archaeological sites with impressive necropolises and rugged landscape.

The world's largest "Christmas tree" is illuminated by hundreds of lights stretching 2,000 feet up the slope of Mount Ingino.

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

The "Mona Lisa" of funerary art.

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

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

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

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

Abandoned village in Sicily built during the agricultural reforms of Mussolini.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

The oldest volcanology research center in the world.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

A dead saint, a deadly poison, and a mysterious holy ooze.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.