High Quality Content by WIKIPEDIA articles! Robert van `t Hoff (November 5, 1887 – April 25, 1979), born Robbert van `t Hoff, was a Dutch architect and furniture designer. His Villa Henny, designed in 1914, was one of the earliest modernist houses and one of the first to be built out of reinforced concrete. From 1917 he was an influential member of the De Stijl movement.