As in the eras before it, Modern Architecture, the architecture of the Industrial Age, began in the last quarter of the Nineteenth Century with a new direction in construction technology, the invention of the steel structural frame. Early buildings began to quickly recognize the potential of this profound change in technology. The Twentieth Century was less than half over when the pattern was in place. From the early "Ionic"conception represented by Carson Pirie Scott Building [1888, left picture], to the "Doric" equivalents in the McGraw Hill building [1930,center picture], and the Bauhaus [1930, right picture] realization of the architectural expression was set. The succeeding years through the remainder of the Twentieth Century and into the beginning of the Twenty First have consisted of the ever increasing elaboration of structure and form. Despite the introduction of inventive structural ideas, like tension structures and structural skins, the basic concept of a structural framework with a "skin" hung on it, along with a mechanical comfort system providing an artificial interior environment, has remained dominant for the last hundred and twenty five years.

For the "Corinthian" equivalent any celebrated building of the last quarter century - same basic concept, increasingly idiosyncratic form - will do.