More environmental performance, a smarter use of the floor, a better management of investment and maintenance costs, and a strong will to embody the City of Paris innovative and proactive commitment towards reusing materials and building with a concern for landscape. Thus, the solid oak façade of the building is entirely built up from reused and transformed landing doors. This wooden second skin gives to the building a sense of cohesiveness, of air, light and porosity; openness and protection. The building physiognomy, façades and green rooftop generate a new landscape in which the building itself is more perceived as part of a garden than just adjoining the street.