Ricard Pié participates in this issue of DAU with the article "Naixement, mort i resurrecció dels mercats municipals". In this article it is described the historical evolution and main features of comecial spaces, from the beginning of XIX century to these days, when traditional markets have reemerged. Finally, three markets are analyzed in detail: Boqueria and Barceloneta, in Barcelona, and Can Mulà, in Mollet del Vallès.