As part of the reconstruction of Printemps, the historic department store on Boulevard Haussmann in Paris, a newly created and awe- inspiring space that stretches vertically from the lower ground floor up to the 9th floor is realized. The architectural objective was to introduce a new atrium to allow visitors to see all levels. As a result, facilitating vertical movement and creating a landmark compliant with the quality of the establishment. To do this, a concept of a vertical dome, also called a veil, penetrates the heart of the building. It is reminiscent and an homage to the store’s iconic stained glass domes seen in 1894. The delicate form is punctuated with petal-shaped openings revealing a layer of dichroic glass that creates a transformative setting within the vast atrium. The veil appears to float in front of the vertical circulation. It is 25.5m high and 12.5m wide, weighs 24 tons and has approximately 17200 eye-catching floral petals that seem to burst through the surface. On the opposite side, a one-way mirror wall concealing 12 newly installed escalators. The reflection simultaneously reacts to the ever- changing play of light and color of the veil, resulting in a visually striking and enduring space.