This is the oldest Roman-made bridge in the city still existing in its original state.

Architectureal fantasy quarter of Rome.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

A bronze statue of the fictional character nicknamed "Mrs. Hat" from a beloved Belgian comedy.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

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

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

The heart of Dutch football history.

The oldest skyscraper of Europe now stands dwarfed by the surrounding structures.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This abandoned shopping arcade has new life as an art installation.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

An ode to a soldier who came to town, fell in love, then began making his own sparkling wine.

The final resting place of the great navigator, or maybe his brother.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.