Designed for the Jacobins' fountain in Lyon, the installation premiered at the Fête des Lumières. In French, Ecrin means "jewel box": the fountain is staged like a precious object, surrounded by 16 laser beams that create a moving, immaterial protective case for the architecture. The installation operates on three scales: that of the fountain, that of the Place des Jacobins, and that of the whole city. When they're not hitting the white stones of the fountain, the lasers point directly at the sky, where they strike the clouds. These beams can be seen popping up through the roofs of buildings, creating a landmark in the city during the festival.