 In these and similar models he developed new architectural shapes, such as the spiral house, the eye-slit house, the terrace house and the high-rise meadow house.In 1974, Peter Manhardt made models for him of the pit-house, the grass roof house and the green service station – along with his idea of the invisible, inaudible Green Motorway.In the early 1980s Hundertwasser remodelled the Rosenthal Factory in Selb, and the Mierka Grain Silo in Krems.