Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

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

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

The silly symbol for an underground protest group is now scattered around the city.

This ex-prison dates back to the Middle Ages.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

A striking public sculpture representing the period of martial law in Communist Poland.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

This black sand beach was crafted from volcanic explosions including the historic Minoan eruption.

A plaque on the base of this statue holds a bewitching design.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The relics of dozens of martyrs are stored in a single chapel.

This monumental fountain has moved around the city multiple times.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

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