This dissertation deals with the meanings of entrance and uses of design within museum spaces. It is important to emphasize that such use must be observed in harmony with the numerous relationships existing and established in these places, which are articulated between the institutions that maintain the historical heritage, its works and exhibitions, and its visitors. Such relationships are complex and multifaceted, and should be observed and studied within a specific historical context, covering the social, political-cultural and economic spheres. Thus, this research has as its main objective to examine the motivations, bases and limits of the insertion and use of the design, as well as, consequently, the changes that inscribed in the very concept of museum. Without forgetting the various professionals involved in the aforementioned relations, we highlight the role of the designer within these limits, and in what way these specialists act and serve the museums, investigating what kind of contribution they can add to the studies of the Design Field. Thus, one of the various issues to be discussed and discussed is pertinent to the facilities that its application can cause, as well as the reach and social inclusion that it is capable of promoting.