Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

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

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

Fortified medieval tower house with lovely roof garden.

Ancient snack bar of the Roman Empire re-opened.

Five candy-colored villages on the Italian Riviera.

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

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

2300-year-old Roman road connecting the empire.

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

Architectureal fantasy quarter of Rome.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Baroque celebration of the end of the Great Plague of Vienna.

Handsomely crafted representations of our round planet.

The beautiful baroque library of the Hapsburg empire.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

Orthodox church partially financed by Tsar Nicolas II.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This historic hotel invented the chocolate brownie.

Despite the ever pressing encroachment of urban sprawl this grand New Orleans manse still stands.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.