Tertiary vibration Strengthening its presence in this city entrance, noticeable from the national road, the architecture developped is based upon the combination of two entities distinctively readable from the outside, within a unitary and coherent building. As a matter of fact, like an architectural metaphor, the building symbolizes the hosted activities : the BA2e headquarter base connected to the economical territory support the project leaders in the stairs to continue their career as brilliant actors of the local economical development. Vibrating with light, the building is set as a urban signal in the activities zone. During the day, the reflective cover, changing with the weather, is tinging with the colors of the sky and the site. This shimmering facade in the image of the seas or a flight of birds, evokes the natural landscapes in the Bassin d’Arcachon and La Teste-de-Buch. During the night, the business incubator is filling with luminous brillance, whereas the AB2e headquarter is appearing with a large banner of light in the landscape, a urban call from the kinetic point of view of the vehicles driving on the national road.