Chicago School

In general terms, refers to the movement among architects and engineers, principally Daniel Burnham, William Le Baron Jenney, John Root, and the firm of Dankmar Adler and Louis Sullivan,during the late 19th century that ultimately led to the development of the skyscraper and a distinct modern style of architectural design featuring steel and iron skeletons clad with masonry, simple exterior decoration often in red brick or terracotta, the rejection of historical forms, and the use of blocky geometric volumes.