The world's oldest known salt mine.

Dedicated to this region's early settlements and rich history of salt mining.

An Austrian house of bones filled with hundreds of intricately painted skulls.

The world's oldest grape-producing vine has survived four centuries of turmoil and even has its own anthem.

The world's most important buildings shrunk to a tiny size.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.

Each year melting snow turns these Austrian hiking trails into scuba zones.

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

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

The Habsburgs' royal collections of art and wonders.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Macabre museum devoted to historical Viennese murders.

A mechanical clock built in 1914, with a rotation of 12 historical figures on its face.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

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.

Fantastic stories on a miniature railroad.

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

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

The shell of a medieval fortress offers commanding views of the area it once protected.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.