The city of Venice, a symbol of both challenges and opportunities, has been analyzed as a representative model of the issues contemporary cities are facing. Demographic decline, tourist overcrowding, and climate change threaten the historic city, calling its very survival into question. Despite decades of debates on its preservation, projects have primarily focused on physical conservation, neglecting the social and civic aspects that make Venice a living city. This thesis explores the food retail sector, proposing a design solution aimed at rebuilding the "city of proximity," a concept that Venice has always embodied. The "Linea Mercato" project addresses multiple needs by offering an innovative solution: the repurposing of decommissioned vaporettos into spaces for food retail, forming an itinerant covered market. With three distinct routes, the market reaches areas of the city lacking food stores, ensuring the entire population access to fresh products at affordable prices in easily accessible locations. The project not only promotes an eco-sustainable approach by encouraging conscious food choices and short supply chains but also creates new sales opportunities for local producers. Additionally, vaporettos represent a resilient solution to the environmental threats looming over the city. As a space for economic, social, and cultural exchange, the market aims to become a social catalyst, strengthening community cohesion. Through neighborhood services, residents can meet more often, converse, and get to know each other better, fostering stable and lasting relationships that help keep the city vibrant and active.