Walter Gropius was a pioneering German architect and founder of the Bauhaus school. Some of his most significant works included the Fagus Factory built in 1911, which featured a steel frame, glass curtain walls, and minimal ornamentation. He is also known for designing the Bauhaus School building in Dessau from 1925-1926 that had standardized modular components, flat roofs, and transparency through extensive use of glass. Gropius embraced functionalist and industrial aesthetics by using modern materials like steel and glass in his buildings, which came to define the International Style of architecture.