My friend, architect Olindo Merone, has recently designed the building of the Border Inspection Post Terminal at the Port of Cagliari. He invented a modular precast concrete panels that mimics the proportions of the containers. The grooves of the panels, oriented in the two perpendicular way, react differently to sunlight. Olindo asked me to imagine the PIF written on the facade. I counted the forms of precast concrete and found that they were exactly those needed to compose the acronym PIF. By choosing two colors the play of light and shadows invents the other two. The visual effect is as many containers were stacked in a magical way. Some of them seem to be suspended in the air.