This study focuses on the process of civic sacralisation of Pisa through buildings built in imitation of Jerusalem. The town development went hand in hand with the evocation of Holy Land architectures. The architectural Jerusalemite memories in Italy seem to be of two types: one devotional, with liturgical purposes, another civilian as the case of Pisa. Pisa, though not the only one, is a very special case, in fact it lends itself to a diachronic reading of his imitationes of the Holy Land. The history of his religious architectural allows to define the program of time and mode of relationship between the commissioners, the city and its policy, in a route that plays archetype of Jerusalem in the sense both politically and civic.