The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

The bomb-ravaged remains of of a colossal Neptune.

Five candy-colored villages on the Italian Riviera.

A lover's walk between hilltop towns, decorated with graffiti love notes.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The Pope’s secret escape route.

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

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

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

A submerged archeological park still holds the wonders of a Roman Sodom.

Pompeii's less famous neighbor is still revealing her secrets.

Ancient snack bar of the Roman Empire re-opened.

Erotic art covers the walls of the largest ancient pleasure palace.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Go inside to really appreciate this 500-year-old technological masterpiece.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Pilgrimage site for star-crossed lovers.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

Famously misunderstood wonder of the ancient world

The oldest working mechanical clock in the world.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.