Piazza Grande XMAS is a video mapping project that transforms Piazza Grande into an immersive urban living room, where light dialogues with the timeless elegance of historic architecture. Festive interiors, decorations, and iconic symbols build a visual narrative inspired by Christmas traditions, intertwining memory and wonder. The facades become scenic backdrops of an intimate and refined narrative, capable of restoring a welcoming and shared dimension to the square, in which digital art and the spirit of Christmas merge in a collective perceptual experience.