The interest in public space as an attractor of human activities generally emerges during the day, when natural light reveals spaces and their characteristics and allows - or not - they use. Seen as a "borderline", the passage from day to night leads to the analysis of elements and strategies that allow everyone and, the most fragile people, to be able to experience the city in equal measure, guaranteeing well-being and safety. This study aims to be a reflection on the theme of urban lighting for the benefit of the entire population, those who encounter obstacles that, inevitably, increase at night. Starting from the review of the literature on the subject, good lighting is here interpreted as a further opportunity for inclusion that supports well- being centered on the person as well as on the quality of the places to live.