2017 marks the centenary of De Stijl, the avant-garde Dutch artistic movement.Founded in 1917, famous proponents of De Stijl (Dutch for ‘The Style’) included Dutch painter Piet Mondrian (1872?1944) and Dutch Architect Gerrit Thomas Rietveld (1888?1964). In practice, advocates of De Stijl would keep their works within the bounds of horizontal and vertical lines, using only primary colours?red, blue and yellow?with black and white. De Stijl based ideas on art, architecture, design, sculpture and typography on the reduction of form and colour. Utopian ideals, geometric order, congruity and minimalism underpinned the movement’s philosophy. Lasting for around fourteen years, De Stijl‘s sway was far-reaching?100 years later, its principles remain influential and prevalent.Three of De Stijl‘s most prototypical designs were realised by Gerrit Thomas Rietveld.Red and Blue chairGerrit Thomas Rietveld’s primary-coloured Red and Blue chair (1918) is an icon of the De Stijl movement. The chair’s components are arranged in a vertical/horizontal composition, linked together without any joints. It is made by Cassina.RELATED: 10 Iconic Chair Designs from the 1920sRed and Blue chair. Photo © CASSINA.Red and Blue chair. Photo © CASSINA.Zig Zag chairThe cantilevered Zig Zag chair was designed by Gerrit Thomas Rietveld in 1934. This experimental seat gives shape to the De Stijl movement’s way of thinking, its compos...