Abstract
As the second series of studies on the Italian "PIAZZA", this paper discusses the relation between "PIAZZA" and the surrounding buildings from the visual structure. The analysis focuses on the relation of visual attributes; the distance of discrimination, the horizontal angle (W/D), the angle of elevation (D/H), to grasp the quality of the space of the Italian "PIAZZA" and to define the meaning of visual points. This study confirms the following: 1) The significant public building can be perceived from the "PIAZZA" edge within the scope of "BINOKULARES BLICKFELD". 2) The visual point "N" , which depends on the emplacement of the significant public building in the "PIAZZA", can be regarded as the substitution of the centroid "G". 3) The distance of discrimination between the visual point "N" and the significant public building is for the most part within 100 metres. 4) The average ratio (D/H), which investigated in the 72 directions to grasp the impression of the closed space, is about 2.3. From the SPREIREGEN's theory of "D/H", this should suggest that the Italian "PIAZZA" makes the comfortable and restful impression on the viewer.
