The building envelope has been designed in order to optimize its environmental performance. It is constructed with a triple glazed envelope, in which there is an external single layer which encloses a 300-millimeter air chamber containing variable louvers to protect the skin from solar radiation while allowing maximum transparency when possible. The inner layer of the envelope is built with standard double glazed, aluminum framed units. While the mullions of the inner, double glazed skin are running vertically on a 1,40-meter grid which will allow maximum flexibility to install interior partitions, the mullions of the second layer have been laid out in parallel to the sliced edges of the form. Both systems of mullions are therefore producing a diagrid with a very acute angle, which operates visually as a moire veil, aimed to further de-stabilize the gravitational affect of the structure.