The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Romans decided this 16th-century "talking statue" was so ugly, they named it after a primate.

Buried next to Pompeii, this lesser-known Roman villa was the opulent vacation home of Emperor Nero's wife.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

This ancient altar emerges from the thick forests to reveal the mysteries of Etruscan sacrificial rituals.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

The walls and streets of the ancient city are peppered with penises.

Roman-era ships unearthed...

Gods clash with machines in a power plant regenerated as a museum.

Rome's ancient Etruscan rival, now a park full of ruins.

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

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

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

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

A Nesting Doll of Churches.

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

Giant, pink stuffed rabbit on an Italian mountain.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

2300-year-old Roman road connecting the empire.

The underground sanctuary of a mysterious ancient cult.