By 1970, the first stirrings of the revolt against Modernist orthodoxy in architecture had been felt, although it would be several years more until Postmodernism was widely accepted and made classical motifs permissible in high-style building design for the first time in decades.
The skyscraper style first advocated by Louis Sullivan - a tower of strongly vertical character with clear definitions among base, shaft, and crown - has remained remarkably consistent throughout the history of this building type.
