Abstract
Light is a fundamental element in shaping the perception of spaces and the urban image. The changes in how cities are perceived in the day and night are directly related to natural light and lighting. Therefore, the aim of this study is to explain the change of urban image concept in the day and night in the most frequently visited cities determined based on annual visitor numbers. The selected cities were analysed by reviewing posts on the Instagram platform, using hashtags, through a new, non-interactive Instagram account. The overall urban images of the first hundred posts reached through the hashtags were analyzed. Finally, the change in the city's image at different times of the day was examined through Instagram posts, with the change explained through concrete findings.