Working with Jon Eaglesham of Barr Gazetas, we created these thirty dichroic glass fins. Each fin is eight metres long, and stands proud of the cladding of this refurbished office building. The fins respond to the changing light conditions. In full bright sunlight they appear as shown here, and from the inside show a variety of dazzling colours which vary depending on the angle of your viewpoint. The north side of the building has ten of the fins, and can be seen from a number of different vantage points. Sometimes they appear red, and at other times blue, and at other times gold. The fins are made with a dichroic film laminated between two layers of glass, which is the least expensive way of manufacturing dichroic glass. Because the film is quite delicate, they can be technically quite difficult to manufacture reliably.