Dare experiments! The book documents the teaching philosophy developed at the chair of experimental design by Frank Stepper and his team at the University of Kassel. The approach places an emphasis on fostering and developing aesthetic and formal imagination through experimentation. Thinking the "impossible" helps to formulate architectural concepts that progress beyond predictable causalities and functional constraints. For the emergence of innovative designs and novel construction typologies analogue models are augmented with computational strategies and digital fabrication methods. 20 Years of teaching Experimental Architecture, from introductory to thesis level projects Experimental videos with QR code links With contributions by Hitoshi Abe, Marie Therese Harnancourt-Fuchs, Steffanie Hennecke and others