Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

This cheese shop also houses a museum devoted to Dutch dairy.

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

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

A floating cat sanctuary on an Amsterdam canal.

The only museum with its curator—and her pets—buried inside.

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

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

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

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

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

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

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

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

More than 450 years ago, an Italian nun became the first woman to paint the iconic subject.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

Secret refuge and museum of the Duke of Florence.

Ever hear of the Milazzo Cage?

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

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

This basilica is dedicated to two saints, one of which is known more for his famous quote.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

These hut foundations are believed to be the residence of Romulus, founder of Rome.