One of the most important furniture designers, he was self-taught, and became one of the most significant architects of his generation. He designed and created the first tubular steel chair in 1925, whilst he was director of the " Bauhaus furniture workshop". Marcel Breuer is one of the great pioneers of tubular steel chair design, and as early as 1925 he invented a series of systems using tubular steel to in the construction of chairs, stools and tables. His "Wassily" chair was the first tubular steel chair and has become a modern design classic.