Vanna Venturi House, Philadelphia, Pennsylvania (1964)Robert Venturi's home for his mother is considered by many to be the first postmodern building. With its green hue, unusually tall chimney, stairs leading to nowhere and oversize fireplace with stairs squeezed around it, the house is what the architect called his "manifesto against Modernism." Photo 9 of 10 in Buildings That Changed America by Amanda Dameron

Buildings That Changed America

9 of 10

Vanna Venturi House, Philadelphia, Pennsylvania (1964)Robert Venturi's home for his mother is considered by many to be the first postmodern building. With its green hue, unusually tall chimney, stairs leading to nowhere and oversize fireplace with stairs squeezed around it, the house is what the architect called his "manifesto against Modernism."