Scottish architect, designer, and painter Charles Rennie Mackintosh (1868–1928) was one of the earliest pioneers of modern architecture and design. While he did not receive much recognition in his hometown of Glasgow during his lifetime, his bold new blend of simplicity and poetic detail inspired modernists across Europe. In this introductory book, we take in Mackintosh's practice across art, architecture, and design to explore his particular combination of the statuesque and sensual and its vital influence on modernist expression across Europe.