Mies Van der Rohe
In 1927 he designed one of his most famous buildings, the German pavilion at the international exposition in Barcelonain 1929. This small hall, known as the Barcelonapavilion (for which he also designed the famous chrome and leather 'Barcelona chair'), had a flat roof supported by columns. The pavilion’s internal walls, made of glass and marble, could be moved around as they did not support the structure. The concept of fluid space with a seamless flow between indoors and outdoors was further explored in other projects he designed for decades to come.