Nowadays there is a deep separation between phenomena and perception of them due the influences that medias have over human information method. The attention is focalized on problems like immigration and crime facts by leveraging people's fear or preoccupation, other factors that influence are certainly crime rate, environmental conditions and social conditions. Also for these reasons, urban safety perception suffers a crisis, especially during night-time, in isolated areas of city that didn’t joy of design attention over artificial lighting, soundscape or urban and architectural quality of public spaces. People feels insecure themselves walking in these places even if there’s no reasons to feels so.