The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

These megalithic tombs contain some of the largest stones ever moved in prehistory.

This medieval synagogue survived the Inquisition as a hospital and church.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

This Moorish fortress has guarded Málaga from the slopes of Gibralfaro hill for nearly a thousand years.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

Locals pay their respects at a shrine to soccer player Diego Maradona—which claims to contain a real lock of his hair.

A narrow opening between the mountains of the Amalfi Coast creates a scenic hidden beach.

Beautiful views and Roman-style statues on the Italian coast.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

This curious, round temple is the oldest still-standing marble building in Rome.

A square-domed symbol of resilience in the heart of the old Jewish Ghetto.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The middle finger of modernity.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

The oldest operating pharmacy in the world features 800-year-old recipes.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

A large statue of Pope Gregory XIII in Bologna was disguised as Saint Petronius to avoid destruction.