Karl Marx Hof is the symbol of the 398 housing complexes which were built in Vienna between the wars by the social democratic city council (1919-34) and immortalized in a workers' song as the "little red brick to build a new world".
Karl Marx Hof, in its brick red and ochre colors, was built with 25 million bricks between 1927 and 1930 to a design by KarlEhn and contains some 1,600 flats and communal facilities grouped around several inner courtyard gardens (about 80% of the Karl Marx complex is made up of parks and gardens).
In February 1934 Karl Marx Hof was the center of the riots between left-wing workers and right-wing extremists and was stormed by the army to suppress the uprising.