Two stunning 17th-century libraries and a cabinet of curiosities.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

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

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

This massive subterranean fissure is known as the "underground Grand Canyon."

Colorful power station with a chimney equipped with a gallery for exhaust monitoring equipment.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

A massive sculpture of an obscure Celtic coin that has become a symbol in Slovakia.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

The largest fountain in Bratislava.

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

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Dine amidst exotic plants at this former royal greenhouse.

A whimsical bridge adorned with decorative dragons.

A relic from the Industrial Revolution got a second life as a contemporary performing arts space.

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

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

An exquisite Baroque church in Vienna's old town.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

The Habsburgs' royal collections of art and wonders.

The house that took a plunge into the facade of a museum.