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

The beautiful, ornate weather station is the most popular geocache in Salzburg.

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

Fantastic stories on a miniature railroad.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

A forgotten and crumbling Yugoslav monument to the victims of fascism.

The laboratory where the Soviet secret police invented exotic poisons used to kill dissidents in hideous and (mostly) untraceable ways.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

The topiary maze at the Habsburg hunting lodge.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

Italian cave with exceptional acoustics and an unsavory history.