A floating cat sanctuary on an Amsterdam canal.

Incredible labyrinth of man made caves.

An art installation memorializing a tram stop, which became a tram stop.

A strangely curved lamppost stands tall over this avenue in Rotterdam.

Elegant marble and old vaults fill this historic Dutch bank turned office space.

A modern reimagining of a medieval city gate.

This colorfully-painted tunnel links two distinct parts of a historic neighborhood.

This charming pup is meant to celebrate the youth and stubbornness of the city's students.

Rotterdammers' dirty minds gave this santa a dirty nickname and cursed it to a life of wandering.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

The world's first floating farm is staffed by one human, three robots, and 35 cows.

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

A statue of the second-tallest Dutchman in history.

A true Valhalla for cactus and succulent lovers.

Amsterdam's Red Light District leaves little to the imagination.

This bronze statue of Martin Luther King was placed in the park without permission.

The last of Amsterdam's original sea level markers remaining in place.

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

This large copper bolt represents the benchmark for measuring sea levels in most of Europe.

Debatably clever, or just plain honest hotel advertised as "The Worst Hotel in the World."

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

A rare tour of an aristocrat's private home reveals valuable 17th-century paintings from artists like Rembrandt.