The lived one has been developed from the cliff towards the inside, on the crinale and, not being able to take advantage of spaces plans of great dimensions, from the constituted central axis they give via Castle - public square of the People - via Rome, have left roads to gradoni and alleys to scalini that they come down quickly, a.ponente, towards the curtain of via Door of Bottom, and to Levant, towards walls them of the Ripe. Later on the axis has continued with the tracing of Garibaldi course: also the west ways come down here towards Malacera; those of east come down towards the Scalandrone, others go back towards S. Antonio. The original village rose nearly sure around to the ancient Castle, and very soon it was encircled of one before cerchia muraria, the Baronial Fencing. An ulterior muraria town-walls had to closed to the height of the graft of via the Ripe with public square of the People: semincorporata circular tower in the lived one testifies one. The last town-walls ran, to east, along via the Ripe; s' it interrupted to the Door of the Bridge, fortified of the circular tower and a ditch; rigirava to the Turret, the south-west; it came down to the Door of Bottom, near which an outpost had (as it indicates via of the Tower) before the door of the castle. To north, the inaccessible cliff closed the defense. With the demographic increase, verificatosi above all between i centuries XVII and XVIII, the empty spaces are taken care man hand, then double the room plans; small alleys and finally are used wall to them. Between 1851 and 1901 the population doubles and the lived one " exits outside " from walls. Here the opened structure more regarding the closed historical center: rectilinear and orthogonal tracings, with planned blocks, have overwhelmed in little decades, the space between the Door of the Bridge and the church of S. Antonio; therefore they have included, sviluppandosi in direction south-east, until the Cemetary and to the Canalone.