For it was in the Windy City that they left the largest concentrations of their work, Wright in the leafy suburb of Oak Park - described by Hemingway, who grew up there, as having "wide lawns and narrow minds" - and Mies at the Illinois Institute of Technology (IIT).
Wright is a popular favourite in the US and his "prairie-style" houses are looked after by foundations or by private owners. There would be no question nowadays of any of his buildings being demolished, a threat that once hung over even his outstanding Robie House.

