Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

A winding path built in secret on the edge of the continent.

A huge musical instrument played by the ocean.

The world's oldest known salt mine.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A fake Transylvanian castle houses a cathedral of antlers.

The world's largest historic armory was established by independent citizens to defend themselves from the wars of larger forces.

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

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

A man has revenged his true love's betrayal through tears and stone genitalia.

The world's largest model of our planetary system.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.