This outsider art house has gone from clinical creation to astounding artwork.

Fantastic stories on a miniature railroad.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

Apartment complexes built into huge repurposed natural gas tanks.

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

English-speaking soldiers discovered Europe's best one-liner at the end of World War II, before the town’s name changed.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

This cubist Vienna church building looks like some sort of alien stonehenge.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The world's oldest known salt mine.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Located right outside of Vienna, visitors can take in expansive views of an ethereal forest.

Baroque celebration of the end of the Great Plague of Vienna.

Op-art architecture designed for happiness.

A spherical "micro-nation" in the heart of Vienna.

The Habsburgs' royal collections of art and wonders.

The world's largest collection of intentionally useless inventions.

Double spiral staircases are not unheard of, but they are very rare.

Legends surround an ancient tree trunk riddled with nails for good luck.

This series of underground chambers contains Europe's largest subterranean lake that is slowly drained each day.

"World machine" built by an untrained Austrian farmer.

Ride a dragon train into a world of dwarves.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

The resting place for anonymous victims of the Danube's dark waters.