By the mid-20th century, it had come to dominate the downtowns of some American cities, largely through some really spectacular office buildings like Lever House in midtown Manhattan, designed by Skidmore, Owings and Merrill.
D’ici la moitié du XXe siècle, il avait conquis les centres de nombreuses villes américaines, notamment par des gratte-ciels vraiment spectaculaires, comme Lever House à Manhattan, conçu par Skidmore, Owings and Merrill.