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

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

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

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

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

A plaque honoring a Hungarian hero of Italy is hidden in plain sight in Palermo.

This peculiar Italian elevator runs both horizontally and vertically.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

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

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

The leathery remains of a woman who died in the 13th century now lie in a church named for her.

A deep mark on the remains of a Roman temple, believed to be left by a legendary warrior.

Plaques on its facade commemorate the Tiber's most destructive deluges.

An unusual "skull with ears" sits in the crypt of this small church tucked away at the end of a narrow alley.

This church carved into the rocks is full of enchanting stone statues.

The tallest statue in Italy is also one of the world's tallest statues of Jesus.

This palatial building houses a remarkable gallery of papal portraits.

This basilica is dedicated to two saints, one of which is known more for his famous quote.

A medieval stronghold rising over the ruins of ancient Roman villas along Rome's southern coast.

Its interior is adorned with some of the best examples of early Christian mosaics.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

A small cell adjacent to this church was once the bedroom for a renowned saint.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.