The large vertical atrium on the southwest side acts as a bioclimatic buffer. During the winter it acts as a greenhouse, reducing heat loss from the envelope and retaining free solar gains. During the summer it opens to the outside through the skylight at the top and uses the chimney effect to naturally ventilate the entire space and offer solar protection to the office spaces behind.
The crown of the tower has the function of sky-garden and hosts the bioclimatic greenhouse. In winter, thanks to a mobile system of photovoltaic blades, the greenhouse remains closed and stores solar gains. In summer, the slats exclude direct solar radiation and provide adequate shading, while maximizing the production of electricity from renewable sources. Basal and top openings allow you to benefit from the effect of through-ventilation.