The transformation of the ruins of a mansion from the 1920s and protected by the INBA into an ephemeral gallery during ART WEEK 2023 The various relationships between subjects and objects are not exempt from continuous transparencies, in the material, the metaphorical and the symbolic. A roof is an architectural and constructive element as well as a metaphor for security and protection, always vulnerable and therefore always with gradual transparencies. The in-situ installation in a ruined structure from the last century reveals the ephemeral