The Bouctot-Vagniez Town Hall in Amiens is a remarkable building, an architectural testament to the glories of nineteen-twenties Art Nouveau. Our project is concerned with designing an extension to this unique building, which is home to the Picardy Regional Chamber of Commerce and Industry. All the essential features of the project are represented in a plinth of living greenery that creates a link between the new wing, the existing premises and the gardens. The offices will be situated above this greenery plinth. They are housed in two separate spaces divided from one another by an atrium that will allow natural light and air to penetrate the heart of the building. Screen-printing technology protects certain perspectives by shading the glazed areas or leaving them clear, according to the needs created by the utilisation of the rooms behind. To the south, on the roadside elevation, a double skin of metal mesh allows for ventilation and creates a sunscreen, creating a secluded atmosphere in the offices. As regards the garden elevation, the design forms part of the existing landscaping as a sort of kink in the boundary wall. The hall opens out as broadly as possible onto the gardens, and the ground floor rises up to embrace a wide panoramic bay window creating a fluid, light-filled space.