A pool of water set at the foot of the stairway has pride of place. A powerful light beam and three floating hulls covered in red mirrors share its surface. A blue light swathes the trees and box hedges of the square, but red light invades the Palais de la Bourse and a red carpet of light stands out against the steps. At the centre of the facade, a large circle of moving reflections is teamed with electronic candle lights. A fantastical atmosphere prevails.