Abstract: The interdisciplinary field of virtual 3D-reconstruction of lost cultural heritage sites is relatively young, but actively developing both in Russia and abroad. Nevertheless, the degree of elaboration of the problems of 3D-reconstruction of various types of lost interiors of cultural heritage objects against the background of an impressive number of high-quality scientifically based reconstructions of the exteriors of monastic and manor complexes, temple structures, urban development is small. Historical interiors, as one of the main forms of spatial organization of life, are unique historical monuments that contain a symbiosis of social and individual, embodied in the culture of everyday life. Stylistically and compositionally original interiors of various buildings take a special place in historical research, increasingly attracting the attention of researchers of history and culture. Rapidly developing computer technologies create more and more unique opportunities for virtual 3D-reconstruction of historical interiors and their further preservation. The article outlines the origins and main stages of the development of the problems of interior virtual reconstruction in historical research. As a result of the research, the author summarized for the first time the history of the development of research on virtual 3D interior reconstruction, traced the evolution of the main trends and research approaches to working with the source base and problems of visualizing the results of reconstructions, highlighted the current directions for solving the problem of interior 3D-reconstruction in literature and scientific projects. The developments of the author of this article create the necessary conditions for the search and adaptation of methods of working with historical sources, visualization of the results of reconstruction and its interpretation in the context of the author's work on the creation of virtual 3D-reconstructions of historical manor interiors.

Abstract: Historical interiors of manor complexes as one of the main forms of spatial organization of life in the Russian Empire in the 18th – early 20th centuries are unique historical monuments that unite both social and individual elements charactering everyday life of the privileged classes of the Russian Empire. Stylistically and compositionally, historical interiors of Moscow Oblast manor complexes have a special place increasingly attracting the attention of Russian history and culture researchers. However, today most of Moscow Oblast manor complexes are ruined and their interiors are completely lost. The latest computer technologies grant unique opportunities for their virtual 3D-reconstruction and further preservation. The article generalizes types of interiors of Moscow Oblast manor complexes of the 18th – early 20th centuries and describes the transformation of t interiors throughout the main periods of classical manor complex culture development. The author clarifies a ceremonial interior type by the example of Nikol’skoe-Uryupino manor (Krasnogorsk district, Moscow region, Russia) and reconstructs the interiors in the Main Building and the White House by collecting an extensive database of visual and textual historical sources. The result of this work is 3D-reconstruction of the main ceremonial interiors of Nikol’skoe-Uryupino manor made in Autodesk 3DsMax and visualized in Corona Renderer software. The research was conducted in collaboration with the Central State Archive of Moscow Oblast.