ABSTRACT
The inscription of the cistorical centre of Porto as UNESCO World Heritage was based on the cultural criterion “(iv)”, considering that the site is of “outstanding universal value as the urban fabric and its many historic buildings bear remarkable testimony to the development over the past thousand years of an important European city”, Figure 1. Hence, the choice of UNESCO was based on the knowledge that a remarkable set of buildings with individual and unrepeatable characteristics transmits outstanding testimonies about the city and its ancestor history.
