The childhood family home of Italian Marxist theorist and politician Antonio Gramsci.

Stalactites and stalagmites in a beautifully lit cave.

Pilgrimage site for star-crossed lovers.

The mountaintop inspiration for Umberto Eco's "The Name of the Rose."

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

A perfectly preserved example of a fortified Medieval ricetto.

An ode to the washerwomen who called Pavia home.

Abandoned hangar from a forgotten part of aviation history, along the Ticino River in Lombardy.

A massive mausoleum towers over the gravestones in a 19th-century Italian "model village."

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

A brutalist gem towering over the heart of Milan.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

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

The secret medieval communication system will whisk your words above the noise of the crowd.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

This lurid German fountain plots the sad course of marriage from dating to death.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

The birthplace of the builder of the Statue of Liberty is now a museum dedicated to his work.

A pair of giant stone heads represent the ancient Roman saints beheaded here.

A series of markers along one side of an Amsterdam canal memorialize the Jewish residents from the other side who died in the Holocaust.

The world's only museum devoted to the wonders of fluorescence.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.