This building features dozens of faces along its facade, although one is a bit chilling.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

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

This medieval church in Rome was almost destroyed following a terrorist attack in 1993.

The sacristy of this church contains remains and relics of members of the Aragonese royal family.

This fountain is dedicated to the workers who perished constructing the Fréjus Rail Tunnel.

A rare example of a medieval house in Rome adorned with a melancholic inscription.

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

This large, circular tomb is the final resting place of the first emperor of Rome.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

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

Richard Luke Concanen never set foot on American soil.

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

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

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

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

A large replica of a monumental Roman inscription is located on the side of this museum.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

This curious, round temple is the oldest still-standing marble building in Rome.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

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

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.