The Winslow house in Oak Park, Illinoise.( Top) by Frank Lloyd Wright. Though other homes he designed had some of the elements of the Prarie style others predicessors had either vetical roofs with a gothic flavor or horizontality with an asymetrical H.H. Richardson composition. The fusion of this design and the Richardson library forms led to the final Frank Lloyd Wright image, the Prarie home, until the falling water period some over 36 years later. The Winslow, and the Vanna Venrturi house (bottom) in Chestnut hill have some similarities but I like Frank's. Got architecture?