The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

The world's tallest boat lift stands as a massive piece of industrial tourism.

Tintin's creator is celebrated in an immersive museum that's an astounding work of modern art.

Housing the groundbreaking maps and globes of Gerard Mercator.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Lavish royal estate punctuated with heated greenhouses.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

This large, circular tomb is the final resting place of the first emperor of Rome.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Architectureal fantasy quarter of Rome.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

Indents in the pavement are all that remain from a grisly death machine in Paris.

A surrealist timepiece by the artist of melting clocks.

Austria's very first and only nuclear power station was completed but never used.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Op-art architecture designed for happiness.

A decomissioned facility where the German "Transrapid" maglev trains were once tested.

Most powerful transmitter in Germany only broadcasts in the French language.

The final resting place of one of Germany's most accomplished Renaissance men.

The final resting place of the famed German pilot, the "Red Baron."