This essential introduction explores Hoffmann's key ideas, projects, and designs to understand his radical aesthetics and their continued influence on European architecture and design, from monochrome interior schemes to the cutlery we put on the table. We explore his integral role at the center of both the Vienna Secession in 1897 and the Wiener Werkstätte, and his commitment to stylistic purity, including some of Europe's first major modernist buildings, such as the Purkersdorf Sanatorium (1904) and the Palais Stoclet (1905–1911).