St Peter's Square Night Image XuJohnny 2018 <p>A night-time image of city contains artificial light sources including: Streetlight, Advertising Lightbox, Light of Building (Internal and external), Digital façade, Billboards, Neon light of signs, Vehicles, Traffic light, Public display, Window, Decorative lamps for street. While virtually most of which are stationary in position, some are dynamic in time, changing in colour and intensity throughout the night. </p>