The galleries of Thessaloniki, a creation of commercial and consumtion are called upon to redefi ne their purpose in the Greece of the economic crisis. On the occasion of the acquisition of the central food market - Stoa Modiano - by a private company, this dissertation aims to propose alternative types of trade that can be housed in this gallery and in the whole complex of galleries in the area of Valaoritou, which are now abandoned. Inspired by the “diagonios” of Dinos Christianopoulos, this work tries to bring the world of publications and art to the surface in order to interact with everyday life, designing constructions / interventions and to give life and new uses to the abandoned galleries. This project focuses on the passages of the stoas, which from their creation until today are considered places of passage to each store and a side view, so as to create a new operating condition and come to “life” these “dead” from abandonment of premises. Providing housing to artists but also to events, based on the ideology of the “diagonios”. Thus, with four diff erent ephemeral constructions that come to create the new condition of use in the passages of the galleries. And based on the exhibition model of the galleries (trade / entertainment), four constructions of the same dimensions, which are connected to each other, create compositions according to the use that the main user wants to receive.