In 1908 he designed the famous interior of the American Bar (Karntner Bar), Durchgang Karntner, Vienna, which, with its coloured glass, marble floor and panelled ceiling, continued the '...confluence of...ideas...some drawn from Neo-classicism, some from the influence of Ruskin and Morris, which constitutes the essence of Loos's philosophy' (Summerson; see 1985 exh. cat., p. 7).