In late 2009 Marco Clausen and Robert Shaw founded the Prinzessinnengarten. The idea arose during a trip to Cuba where Shaw saw that people cultivate vegetables directly in the city to feed themselves. Then, six years ago, the idea of trying the experiment in Berlin: They chose Moritzplatz, certainly not one of the most beautiful squares of the city, and turned a big corner that was completely neglected into a large urban garden. The Berlin urban gardens are not a novelty, in fact, in many parts of the city citizens own small pieces of land in which they spend their free time planting vegetables or gardening. The absolutely innovative and unique idea of Prinzessinnegarten, however, is that within this urban garden there is no private property; anyone is free to enter and cultivate a great variety of vegetables. In the same way the vegetables are grown here, they can be taken away without paying anything. The important thing is to devote with constancy to the cultivation of vegetables. In fact the base of the project of Clausen and Shaw is the sharing of an activity and of knowledge. The outcome of this process is the direct use and consumption of a product that was not purchased but that is the result of a collective activity. The project had so much success that Shaw and Clausen were invited to give seminars and lectures in schools. And even city planners from various countries around the world are studying their case in order to apply it in other cities.