Bizarrely-painted church designed by a controversial artist.

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

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

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.

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

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

Dine amidst exotic plants at this former royal greenhouse.

The housing complex served as an anti-fascist fortress during the Austrian Civil War.

A neo-Gothic mansion now houses a wunderkammer of analog tech that hits on all the senses.

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

A silly medieval mural preserved on the side of a Viennese house.

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

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

An exquisite Baroque church in Vienna's old town.

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

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

A history of heat is on display at this unique Austrian museum.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

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

The beautiful baroque library of the Hapsburg empire.

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

This cubist Vienna church building looks like some sort of alien stonehenge.