Occupying the rooftop terrace of the Musée de la Civilization, Roof Line Garden reinterprets the roofline of the museum and the roofs of Old Québec City. Thousands of strands of recyclable barrier tape create a canopy of colourful lines to bring visitors up to the terrace to linger, creating a vibrant social space. Barrier tape is typically used to delineate a perimeter and keep people out of a particular zone but it is used here to invite visitors into this colourful immersive environment. Changing constantly with the intensity of light and wind, from calm and serene to kinetic and wild, the space transforms as the tape’s movement varies from a quiet stir to a vigorous rustle. The steel frame was reused for three years with new colours for the tape chosen in response to the changing programming of the museum.