The book "Design Collaborativo per una Riserva Naturale: Ipotesi Progettuali sul Caso della Palude Brabbia" represents the final outcome of my master thesis process, which concerned the ideation and implementation of design solutions based on participatory design for a natural reserve situated in the province of Varese, Italy. The first part of the book collects a research on identity, wayfinding and participatory design, while the second presents the four design solutions developed in the final project.