16-B Frank Lloyd Wright, Fallingwater, 1935–1939 - Why is this house called Fallingwater? The house extends over a waterfall. - Which exterior materials on this house are natural and which are man-made? The stone is natural, and the concrete, glass, and metal are man-made. - Notice how the textures of these materials contrast with each other. Describe the textures of the different parts of the house. The glass is smooth and shiny and the rock is very rough. The concrete is gritty, but not as…