ABSTRACT:In March 1447, a great fire broke out in Valencia, caused by a former member of the municipal government. This fire destroyed many houses and craft workshops around the Market Square, the economic centre of the city. The municipal government had to compensate the citizens, who had lost everything, and restore everyday life in the area. A versatile Italian watchmaker living in Valencia was chosen to supervise the rehabilitation of the area. Under his direction, the debris was removed. Then after a conscious campaign of urban planning aimed at eliminating any traces of the old Islamic city, the streets were reconstructed according to the norms of the western city.