Placemaking is a shared approach to the design of public spaces to make them the beating heart of neighbourhood or city regeneration initiatives. The city can be understood as a network of relationships, and designing the urban context means first of all understanding, enhancing and structuring this complex network. Within this process, design assumes a central role as a tool capable of actively contributing to the construction and evolution of the connections that define the urban environment. In this perspective, it is possible to speak of design “plug-ins”: targeted and contextualised interventions that aim to enrich and enhance the urban system. Depending on the impact these elements have on the organism of the city, they can perform different functions: acting as generators, inserting new elements that modify the existing context and open up new perspectives; as mediators, reinterpreting practices already present to create new landscapes and connections; or as identifiers, that is, tools that identify, make visible and describe urban places and uses, promoting a greater collective awareness of the city space.