This sea-based blowhole releases seawater when waves hit the coastal caves.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Breathtaking and huge 430 year old maps of Italy.

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

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

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

Five candy-colored villages on the Italian Riviera.

A lover's walk between hilltop towns, decorated with graffiti love notes.

The bomb-ravaged remains of of a colossal Neptune.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

This saucy statue once caused outrage among locals.

The celebrated eyesore created by starry-eyed sweethearts.

A glamorous hotel that once accommodated French resistance fighters and concentration camp survivors.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

One of Jeff Koons’s largest sculptures and his first commemorative work.