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In page Friedensreich Hundertwasser:

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In the 1970s, Hundertwasser had his first architectural models built.[citation needed] The models for the Eurovision TV-show "Wünsch Dir was" (Make a Wish) in 1972 exemplified his ideas on forested roofs, tree tenants and the window right. 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.[7]