Vanna Venturi House

The Vanna Venturi House, one of the first prominent works of the postmodern architecture movement, is located in the neighborhood of Chestnut Hill in Philadelphia, Pennsylvania. It was designed by architect Robert Venturi for his mother, Vanna Venturi, and constructed between 1962 and 1964.
The five-room house stands only about 30 feet tall at the top of the chimney, but has a monumental front facade, an effect achieved by intentionally manipulating the architectural elements that indicate a building's scale. A non-structural applique arch and "hole in the wall" windows, among other elements, together with Venturi's book Complexity and Contradiction in Architecture were an open challenge to Modernist orthodoxy.
Architectural historian Vincent Scully called it "the biggest small building of the second half of the twentieth century."

Wikipedia