The 17th International Architecture Exhibition, in Venice from May 22 to November 21, 2021, is titled How will we live together? As curator Hashim Sarkis explains, "the theme of the Biennale Architettura 2021 is its title": organized into five different scales, the Exhibition presents the Participants who will compete for the Golden Lion and also includes a series of research stations developed by researchers from universities around the world. Volume I of the Catalogue is dedicated to the International Exhibition, curated by Hashim Sarkis, and begins with an essay setting out the themes of the show and presenting its protagonists. Architects and studios therefore illustrate their projects with images and texts. Volume II of the Catalogue presents the National Participations, a Special Project in collaboration with Victoria and Albert Museum and the Collateral Events of the 17th International Architecture Exhibition.