Charles Rennie Mackintosh (7 June 1868 – 10 December 1928) was a Scottish architect, designer, watercolourist and sculptor. He was a designer in the Arts and Crafts movement and also the main exponent of Art Nouveau in the United Kingdom. He had a considerable influence on European design. While working in architecture, Charles Rennie Mackintosh developed his own style: a contrast between strong right angles and floral-inspired decorative motifs with subtle curves, e.g. the Mackintosh Rose motif, along with some references to traditional Scottish architecture. The project that helped make his international reputation was the Glasgow School of Art (1897–1909). During the early stages of the Glasgow School of Art Mackintosh also completed the Queen’s Cross Church project in Maryhill, Glasgow. This is considered to be one of Charles Rennie Mackintosh most mysterious projects. It is the only church by the Glasgow born artist to be built and is now the Charles Rennie Mackintosh Society headquarters.
Like his contemporary Frank Lloyd Wright, Mackintosh's architectural designs often included extensive specifications for the detailing, decoration, and furnishing of his buildings. The majority if not all of this detailing and significant contributions to his architectural drawings were designed and detailed by his wife Margaret Macdonald whom Charles had met when they both attended the Glasgow School of Art. His work was shown at the Vienna Secession Exhibition in 1900. Mackintosh’s architectural career was a relatively short one, but of significant quality and impact. All his major commissions were between 1896 and 1906, where he designed private homes, commercial buildings, interior renovations and churches.