The Latin meaning of porta leads back to the meaning of landscape and is the same as portus or from the Greek poros, meaning port. From this synthesis comes the idea of the project as a threshold of passage that has always two environmental limits: the sea and the land, the city and the castle. A threshold that is the “beginning”; “beginning” and “end” of a passage materialized in the square: an identity place of Castiglione della Pescaia. The context of Castiglione della Pescaia is characterised by a strong dualism between land and sea, opposing elements that define a unitary image. From the environmental point of view, there is a strong disparity of identity elements: on the land, rules and proportions predominate; towards the sea, confusing characters emerge, dictated by the disorder of the settlement. Walking along the streets of the centre we arrive at Orsini Square, close to the sea, but the view is obstructed from every viewpoint. The project’s future vision is to connect the centre, the square, the seafront and the pier, enhancing the view of the sea and giving the city a new identity image of decorum and cleanliness.