The interior of the building is decorated with marble paneling and artworks, including mosaic friezes by Gustav Klimt (designed by Klimt and carried out by Leopold Forstner)and murals by Ludwig Heinrich Jungnickel.
Det indre af bygningen er indrettet med marmorpaneler og kunstværker, herunder mosaikfriser af Gustav Klimt (designet af Klimt og udført af Leopold Forstner) og vægmalerier af Ludwig Heinrich Jungnickel.