With 50 pivoting prisms, Toronto-based architecture firm RAW has transformed downtown Montreal into an interactive kaleidoscope. The installation, called Prismatica, is one of two winners selected in the city’s fifth annual Luminothérapie competition. This is the first time that a non-Quebec based firm has won the competition, so congrats to RAW. “The 50 pivoting prisms are made of panels laminated with a dichronic film that transmits and reflects every colour in the visible spectrum, varying with the position of the light source and the observer,” RAW explained in a statement. “The prisms are mounted on bases containing projectors. As visitors wander among and manipulate the prisms, they will enjoy an infinite interplay of lights and colourful reflections. As the prisms rotate, a variable-intensity soundtrack comprised of bell sounds will play.” The director of the firm, Rom Colthoff, added: “We wanted to contribute an installation that was immersive, yet inviting. We wanted people to play around, have fun and, in doing so, forget about the cold.” While impressive, the installation probably isn’t enough to get people to forget about the cold—the bitter, bitter cold. Prismatica is on display until February 1st.