While living in Chicago, Ludwig Mies van der Rohe constructed the Seagram Building, New York. This building was consequently constructed by a grid of columns that consits of steal beams coated with concrete and covered by bronze. One of the principles of the International Style was to bring the structure of an building to the front. By installing an non-bearing curtain wall with vertical I-Beams made of bronze, Mies shows the construction principles of this building.