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

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

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

Ancient snack bar of the Roman Empire re-opened.

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

Medieval torture techniques with a modern conscience.

Pilgrimage site for star-crossed lovers.

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

2300-year-old Roman road connecting the empire.

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

The glowing blue Nymphaeum of Emperor Tiberius.

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

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

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

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Fantastic views and thousands of love locks.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

The real life town from the Pied Piper of Hamelin has a mechanical puppet show that retells the famous story many times a day.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

A stunning two-story timepiece within a medieval Brick Gothic church.

It's good luck to be mocked by this monkey.