Figure 16. A sketch with multiple vanishing points by B. Sangallo Legacy What influence Peruzzi's designs may have had on later designers is difficult to ascertain. However one may make some observations that are useful in understanding the continued development of the perspective stage in the tradition of a unified perspective vision that his work was the first to establish. Figure 17. Sketch by A. San Gallo * Sebastiano Serlio Sebastiano Serlio's perspective stage (figs. 15a and b), in his Second Book of Architecture, is exactly what we see in Peruzzi's La Calandria (fig. 1). His longitudinal elevation shows the level forestage with the raked perspective vista behind it. Details of his "comic scene" are similar, if not the same, including the stageright loggia and the "shop on the corner." One concludes that the model for Serlio's work was Peruzzi, possibly La Calandria itself. Serlio's work spread his version of the perspective scene throughout Europe as his work was eventually translated into every major European language. However, subsequent designs in Italy appear to have followed a different course. * Bastiano Sangallo Figure 16 (attributed to Sangallo)25 is an attempt to create a perspective stage with more than one vanishing point to show more than one street in the vista. The flat forestage sets above a THEATRE SUMMER 2007 DESIGN & TECHNOLOGY 45