A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

Hidden in plain sight, this creepy sculpture watches from above.

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

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

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

The topiary maze at the Habsburg hunting lodge.

This former insane asylum now holds a pathological anatomy museum.

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

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

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

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

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

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

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

An exquisite Baroque church in Vienna's old town.

The solemn exterior conceals an opulent interior of this 17th century church.

Op-art architecture designed for happiness.

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

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

Apartment complexes built into huge repurposed natural gas tanks.

Physicist’s epitaph provides final confirmation to a career of turmoil.

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

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.