George Ranalli presents “pieces, layers, skins,” his understanding of architectural insertions; spatial layering. He defines illusionary space. Inside/outside. Cites examples: Palace of Domitian, Pantheon, Laurentian Library, Teatro Olimpico, Doge’s Palace, Venice, Sir John Soane’s house, Philip Johnson’s Glass House, Louis Kahn’s Bryn Mawr dormitory and Mellon Centre, and his own project, the façade, second-floor renovation for NYC shop First of August. Q+A discussion with Open Atelier of Design (OAD) students follows.