Interior, bust honoring Emperor Franz Joseph I (1830-1916); 1906 refers to dedication of the building; The design for the Postsparkasse, one of his best-known works, won a competition (1903) and is based on a logical trapezoidal plan with a banking hall at its centre. The six-storey entrance façade, surmounted by a simple Sezessionstil pergola flanked by winged figures, has large windows set in walls faced with white marble with aluminium fixings. The central space of the banking hall (modified 1980s) had a glass vault of stilted elliptical section carried on riveted steel columns, and a floor with glass lenses to light the basement below; aluminum ventilation bollards ranged around the wall added to the illusion of an industrial aesthetic....