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

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

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

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

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

Romans decided this 16th-century "talking statue" was so ugly, they named it after a primate.

King Ludwig I's collection of beautiful women.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The oldest Jewish cemetery in Europe survived Hitler's Germany.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

Geothermal waterfalls in Tuscany.

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

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

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

Architectureal fantasy quarter of Rome.

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

The oldest continuously operating mint in the world that has been making coins since the 9th-century.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

This mural painted by Keith Haring was done without payment as a gift to entertain the children at the Hôpital Necker.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

This emotive sculpture was originally created for the 1878 World's Fair.