The second Director of the Bauhaus in Dessau, serving from 1928 until 1930. He was a proponent of Functionalism.
He was trained as a mason and was an architect in Switzerland, Belgium, and Germany; he served as the Krupp Works' department head from 1916 until 1918.
He co-founded the architectural magazine, Contributions in Building, in 1923, with Hans Schmidt, Mart Stam, and Russian cultural ambassador El Lissitzky.
He revealed little about his personal life. He gave 12 motives for building a house, including one's sex life, sleeping habits, pets, gardening, weather protection, car maintenance, and cooking.
He was appointed head of the Bauhaus architecture department by Walter Gropius before following him as director.