Modern architecture has not so much excluded the commercial vernacular as it has tried to take it over by inventing and enforcing a vernacular of it own , improved and universal . it has rejected the combination of fine art and crude art . The Italian landscape has always harmonized the vulgar and the Vitruvin: the contorni around the duomo , the portiere’s laundry across the portiere’s portone , Supercortemaggiore against the Romanesque apse . Naked children have never played in our fountains , and I . M . Pei will never be happy on Route 66 .