Happy Birthday: Walter Adolph Georg Gropius (18 May 1883 – 5 July 1969) was a German-American architect and founder of the Bauhaus School, who, along with Alvar Aalto, Ludwig Mies van der Rohe, Le Corbusier and Frank Lloyd Wright, is widely regarded as one of the pioneering masters of modernist architecture. He was a founder of Bauhaus in Weimar (1919). Gropius was also a leading architect of the International Style.