The intense movement revolving around the construction, expansion and remodeling of art museums throughout the world signals the growing importance of the role of architecture in the circulation of art, whether as a media even or as a generator of new urban centralities, and in the adaptation of museums to the important transformations that have occurred in the field of art since the 1960s. The paper presents three approaches to the theme, each contemplated in a chapter. The first examines the participation of architecture in the communication and representation strategies in the act of exhibition, the second addresses iconic architecture that transforms the museum into image and symbol that appears in the media at the institution s service, the third chapter focuses on ephemeral architecture in the context of art, working with the idea of the museum as an undetermined space that is not anchored to a fixed structure, but to a system of social and spatial connections.