The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A little sculpture with a large wardrobe.

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

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

It's always summer at the beach inside this former airship hangar.

The curious underground history of keeping Paris clean.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Its collection includes a broad array of social, geographic, graphic design, and political history.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

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

Amsterdam's former hotspot for public executions and dissections.

A beautifully eclectic mix of architectural styles.

Colorful and chaotic stacked hotel in North Holland.

This chimerical bridge/tunnel appears to dead end right into the sea.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

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

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

Model Trains and Much More in Hamburg.

The only remaining U-boat that is still floating never actually saw any action in World War II.

Giant wind turbine with observation deck at the very top.