This trail was once used to smuggle cigarettes, sugar, and other black market goods between Italy and Switzerland.

This 1st-century CE Roman bath sits under a carpark.

Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

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

A larger-than-life house of cards stands outside the house of a former fashion designer.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

A Milanese café entirely designed by the American director Wes Anderson.

A brutalist gem towering over the heart of Milan.

This poignant art installation raises awareness of violence against women.

A small sculpture that pays homage to the famous bronze ear of Ca de l'Oreggia—or does it?

The mark of the Devil's horns on a marble column in Milan.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

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

Third time's a charm, or in this case, two testicles are.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

The train platform where Jews were sent to concentration camps is now preserved as a Holocaust memorial.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

100 year tradition of fist fights, marked by marble footsteps.

Where Venice's gondolas go for a tune-up.

The pile of books behind the dignified writer gave the statue a most undignified nickname.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

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