The founding ambitions of our project are: _a very powerful environmental design; The location of the building maximizes the benefits of the South orientation and "broken" volume facing the park will bring back the sun and natural light in the heart of the plot. The facades and roofs complete the integration of environmental advantages: the facades carrying renewable energy equipment like solar panels on south facade and solar thermal tubes and sensors on the roof. The roof is planted. _Our building enhances the relation to its landscape and environment. _a strong architectural identity associated with a clear differentiation of specific programs.