The author proposes to consider the significant changes that have recently taken place in the construction and architecture of museums. There has been a fundamental change in society's attitude toward the museum as a source of knowledge, a source of spiritual values. Museum attendance is fall-ing. The way out that modern museums find is determined by the needs of society. And as a result, museums are going through a period of commercialization, which has defined the museum object as an object of entertainment. Museums are moving into the realm of large entertainment and educational centers with concert halls, libraries, conference rooms, children's areas, developed food areas, etc. At the same time, architects are challenging designers to provide complex shaping with modern materials and design solutions. In addition to this there is often a lack of space in the cities for the erection of such buildings. The team of the Department of Architecture at Moscow State University of Architec-ture and Civil Engineering has been working on this problem for many years and offers a new type of building. These are bridge and platform buildings, which are elevated large-span objects. Their design solutions involve the most modern structures in the form of steel reinforced concrete ceilings, multi-lattice trusses and a supporting floor system which allow large spans of up to 100-150 m to be covered, which in turn makes it possible to reuse the urban area previously occupied by railroads, freeways or industrial areas. Large spaces are created inside such objects without intermediate supports, which allows to place in them the most diverse objects in terms of their functionality, including museums.