At the Bauhaus in Weimar, Marcel Breuer served an apprenticeship as a carpenter and later also worked in collaboration with Walter Gropius. After they had to flee to the USA because of the Second World War, Breuer, Gropius and other artists built a faculty of architecture at Harvard University. Even before this happened, Breuer was appointed the junior master and conductor of the Bauhaus Dessau Furniture workshop in 1925. He is one of the most important and influential designers of the twentieth century. Particularly well known is his tubular steel furniture, such as the legendary Wassily, created by Breuer during his time at the Bauhaus. But also the numerous furniture made of aluminum or bent plywood are among the modern classics. In the thirties, Breuer began his second, highly successful career as an architect in the United States. International attention was found in addition to numerous prestigious houses projects like the Whitney Museum in New York and the UNESCO Headquarters in Paris. The most famous piece of Breuer's furniture is also known as Wassily chair Steel lounge chair B3. It is made from a wide range of tubular steel furniture which characterizes the designer as the inventor of this special construction method.