This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

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

This unattributed sculpture in Amsterdam is hiding in plain sight.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

Strange secondhand shop showcasing taxidermy and oddies

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

Mosaics created from 11 million cigar bands.

Wind power station for making famous Ketel One vodka.

A statue of the second-tallest Dutchman in history.

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

A curious collection dedicated to human and animal anatomy and pathology.

Cat art as far as the eye can see.

A floating cat sanctuary on an Amsterdam canal.

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

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

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.