Glasgow-born Mackintosh is a major figure in the art nouveau movement. One of the most original and influential artists of his time, his instantly recognisable style avoided the floral ornament often associated with that movement. Primarily known as an architect (his greatest achievement is the Glasgow School of Art building), he was concerned with aspects of interior design and also painted watercolours. Mackintosh was well respected, above all on the Continent, for his innovation. He was a vocal critic of the dominant architectural style of his time, when buildings were frequently made to imitate the architecture of the past.