Leeds City Council are building a new concert arena in the city centre, on a strategically important site that is bound by the ring road. The interior design of the venue is based entirely upon sight lines, resulting in a perfect, fan-shaped structure. The facade design, meanwhile, has been developed to promote an active opening towards the public square - the main entrance to the venue - communicating the life of the building to the outside. The project develops the typology of the lens of a human eye as a screen, a powerful concept that expresses the internal space bursting conceptually outward from the central stage area. The exterior facade is based upon the voronoi as a spatial and structural concept, where the hexagonal sections serve both as visual relations and as public routes within the site.