The Barcelona chair is a chair designed by Ludwig Mies Van Der Rohe and Lilly Reich in 1929. It was originally designed for the German Pavilion, that country's entry for the International Exposition of 1929, which was hosted by Barcelona, Spain. The frame was initially designed to be bolted together, but was redesigned in 1950 using stainless steel, which allowed the frame to be formed by a seamless piece of metal, giving it a smoother appearance. Bovine leather replaced the ivory-colored pigskin which was used for the original pieces.