Organic architecture designed by Frank Lloyd Wright. It is a type of architecture that is considered part of nature. An architecture that must be integrated with the surrounding nature. The details of the architecture are made of natural materials: wood, stone and reinforced concrete. It is confused with nature. Explicit integration of anthropogenic and environmental factors. Not economic. By order of rich people. Houses on the prairie are small houses that develop on one floor. For example, the Kaufmann House, a house on a waterfall. This single-family villa, built on a waterfall overlooking a creek in Pennsylvania, is located on three floors, completely immersed in the forest. Built of local stone or reinforced concrete. The central stone pillar is the support from which the horizontal planes begin, creating terrace slabs. Reinforced concrete for horizontal load-bearing elements and stone for vertical ones. Very protruding terraces. It starts with the element that is next to the sto