Jacques Vergely, landscape designer, teacher in the Ecole du Breuil at that time, suggest to his students to work on many different contexts and scales. This roof garden project had to be presented within two options: one "greener", with more than 80% of plants occupation, and the other, the opposite, more mineral. Respecting the main technical issues (as the weight, the water circulation and use, interesting views,...) we had to make it in 4 weeks.
