A fascinating itinerary through the streets of Reggio Emilia's historic center, where water, now hidden from view, has left a profound mark on the urban structure and the city's collective memory. This is a journey to rediscover the historical water network that for centuries supported artisan activities and fostered trade. An invisible link connects the city's urban evolution with the presence of water: a vital element that has shaped not only the landscape, but also the social, economic, and cultural life of the city.