This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Romans built the world's tallest artificial waterfall in 271 BC.

This Italian stadium makes liberal use of fascist statuary to evoke classical sporting arenas.

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

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

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

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

A sculpture serving as an homage to Pope John Paul II.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

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

Italian cave with exceptional acoustics and an unsavory history.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

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

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

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

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

The pristine waters crossing this forest form a hidden waterfall among the dense vegetation.

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

Three underground crypts and a pointed arch under the bell tower make this cathedral unique among Romanesque churches.