We imagined an immersive mapping show projected on the Mariniers Bridge in Châlons-en-Champagne, transforming this iconic structure into a poetic bridge between the fluvial past and the luminous future. The visual story, punctuated by the history of the city and its links with water, extends along the quays thanks to a scenographed light installation, creating an open-air sensory journey. An artistic proposal designed to enhance local heritage, energize the banks and offer walkers a new nocturnal experience, combining emotion, technology and urban poetry.