Theme park featuring miniature replicas of European monuments.

Climb inside an iron crystal magnified 165 billion times its normal size.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This museum is filled with an eclectic collection of unique inventions.

Preserving the research tools, unexpected inventions, and odd collections of generations of college professors.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

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

Nestled in the woods lies this land art project: a hybrid between park, maze and natural monument.

Organisms normally seen under a microscope decorate this church.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

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

Peek through a transparent pyramid and drink in the mountain made of books.

This disused VLF radio station is no longer in service but the surrounding town still bears its name.

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

An early 19th-century English style garden hidden in the Rotterdam cityscape.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

An icon of International Style architecture on the outskirts of Rotterdam.

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

A true Valhalla for cactus and succulent lovers.

Rumored to have been frequented by Vincent van Gogh, it's the only remaining genever producer in the Hague.

The world's first interactive human body museum also serves as a chair for a giant orange man.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

This public library and its impressive collection of academic books have not changed since the 17th century.