The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

The yawning maw of this pagan visage is said to bite off the hands of liars.

A beloved local artist has been honored with this statue of a man emerging from a toilet.

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

A massive line that stretches across the floor of Bologna’s largest church was created by a 17th-century scientist to measure the movements of the Sun.

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

One man's quest to fix his toilet unearthed over 5,000 artifacts spanning more than 2,000 years of history.

A fascist-era rural village abandoned since the early 1980s.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

A long-buried ancient ruin unearthed right in the middle of the city.

This medieval city gate is now a blend of the past and the modern world.

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

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

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

The burial place of an obscure North African saint was turned into a macabre body preservation factory for the 17th-century Neapolitan elite.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.