An imple­men­ta­tion of the Pal­la­di­an gram­mar using a graph gram­mar and a graph to shape map­ping is pre­sent­ed. The appli­ca­tion is embed­ded in a para­met­ric CAD envi­ron­ment and allows the explo­ration of Pal­la­di­an vil­las by hand or by using a ran­dom generator.