Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

According to the legend, this structure was built in a single night with the help of the devil.

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

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

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

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

A special area of the National Archaeological Museum of Naples is located inside a metro station.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

This breathtaking monastery was established by Saint Benedict himself 1,500 years ago.

This monastery set over a holy cave contains the oldest known painting of Saint Francis of Assisi.

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

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

An ancient Roman temple first dedicated to an emperor's wife is now a church.

This ancient market is often referred to as the oldest shopping mall in the world.

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

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

Breathtaking and huge 430 year old maps of Italy.

What appears to be an ancient Roman temple is actually a Catholic church.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

The mummified relic of St. Antoninus.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.