These spaces many times and always enigmatic tours are museums are enveloped by a halo of mystery that is trying to unravel this work: the study of spaces of collecting from antiquity to the present day illustrates on how to watch the world each time, because the museum is not only a place for conservation, education, research and recreation, but also the example of how a society views itself, how to understand its origin and history and its understanding the universe. The arrangement of the pieces, their exposure and the relationship between them contains a certain vision of the world, the museum building is mirror symbol. The many examples of architectures designed and built to preserve and exhibit objects (an outstanding set of drawings, photographs, descriptions and stories of buildings) to make these pages a collection of architectures, a sort of museum of museums, which actually would be the universe that contains them. Divided into four sections that correspond to major historical periods (until the mid-eighteenth century, when the era of private collections and galleries arranged in enclosures is abandoned and the idea of ​​public museum emerges as a separate building, the nineteenth century, through its use museum types, as the museum gallery, the temple museum, the palace and museum spaces addition, the early twentieth century, when a mutation gaze spaces occurs, and the museum is born modern, to be developed with input from leading architects like Wagner, Perret, Le Corbusier, Mies, Wright, Aalto, Sert, Kahn, and finally museum architecture from the seventies, when the social role of the museum transforms and its image, its features and its architecture, leading to the museum mass, which is analyzed in its various trends up to the present time), the work is enriched by the addition of an annex documentary historical texts.