This sculpture comprises three identical forms installed on the ceilings of the three vestibules that lead out of the entry foyer. In each part, a luminous ring appears to pass through the surface of a mirror, uniting actual and virtual space. The sides of the ring are made from brass; its inner- and outer-facing surfaces are brightly illuminated from within. The ring is, in fact, an illusion composed by a half-ring form and its reflection in the mirror.