At the Technical University of Vienna, the "Pneumatic Wedge Method" was developed. An economic construction of double curved shells is possible with this method. A flat concrete slab is bent to a double curved shell structure with the help of air cushions and tendons. This thesis deals with the design and construction of a free-form shell of concrete using the "Pneumatic Wedge Method". Following a description of possible construction methods, design and structural analysis of a large-scale experiment are discussed. Further shells that can be built with the "Pneumatic Wedge Method" were calculated by using a finite element program. Then, the large scale experiment is discussed in detail. In conclusion, this thesis provides possible improvements of the construction method and a possible application to larger projects.