The remains of a centuries-old water system that inspired local legends of secret tunnels.

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

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

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

2300-year-old Roman road connecting the empire.

An alchemist's “magic door” stands in the middle of a Roman park.

Over time, this castle grew to encompass the entire island.

A 15-foot-tall statue of the head of the Sopranos family greets passengers at a train station in southeastern Lithuania.

The world's first invisible city square is an homage to a man who pushed the boundaries of art.

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

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

Time has been frozen at this station since the bombing in 1980—or so it was believed.

A large statue of Pope Gregory XIII in Bologna was disguised as Saint Petronius to avoid destruction.

A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Water and windows define this defensive Italian well.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

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

A century-old prison in the heart of Vilnius is now a lively bar, dance club, and artist residency.

An abandoned masterpiece of Soviet Brutalist architecture.

This magnificent Art Deco church is a reflection of Lithuania’s turbulent history.

Described as one of the Baltic region’s most daring and original construction projects.

By night, this auto repair shop turns into a taquería serving up some of the city's finest al pastor tacos.