Sometimes walls strike aside attackers, but sometimes they just hide what is preserved inside of them. Instead of intercepting the incoming, they restrain the diffusion of what is kept behind them. The research of city walls did not highlight only the chronological and regional variations enabling scientists to rethink how and why urban circuits were constructed and how they functioned. Looking at walls, we do not observe only the historical narratives about invasions, but we can observe the benefaction, civic pride, economy, availability of military labour and combination of all these factors. However most important was the prestige, the ability to undertake large-scale public work to aid in the stability of the regime and economy.
