A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

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

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

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

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

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

The bomb-ravaged remains of of a colossal Neptune.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Established in 1638 to battle the Black Death, this botanical garden is a treasure trove of rare flora.

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

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

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.

Five candy-colored villages on the Italian Riviera.

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

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Cat art as far as the eye can see.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.