Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

A magnificent collection of imperial armor and weaponry.

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

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

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

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

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