Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

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

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

A haunting medieval cloister that once served as the friars’ burial ground.

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

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.

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

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

The oldest operating pharmacy in the world features 800-year-old recipes.

Drink wine handed out through a window as part of an age-old tradition.

These bronze horses on the gates of the Royal Palace of Naples were a gift from a Russian tsar.

Richard Luke Concanen never set foot on American soil.

Locals pay their respects at a shrine to soccer player Diego Maradona—which claims to contain a real lock of his hair.

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

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

This small church was constructed over the ruins of three temples dating to the Roman Republic.

This is the oldest Roman-made bridge in the city still existing in its original state.

A square-domed symbol of resilience in the heart of the old Jewish Ghetto.

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

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

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