Abstract: The article examines the last stage of the existence of the Chudov Monastery of the Moscow Kremlin in its last decades. This period is one of the least studied in the history of the monastery, and yet, it is at this time that both the personal dramas of the inhabitants of the monastery before the closure of the monastery and the procedure for transferring valuables to the Armory that began immediately are exposed. Using the example of the monastery, we see how the new government forms a position regarding valuable monuments. It is noteworthy that the inhabitants of the monastery believed to the last that they would be able to find a compromise solution and leave at least a few monks to guard the monastery and perform divine services, but, unfortunately, the plans of the new government were completely different. In parallel with the process of evicting the monks, there is a struggle for the preservation of the complex exclusively as a monument of architecture and culture, where the main role is played by the Department for Museums and the protection of monuments of Art and antiquity, in those years it was headed first by I. Grobar, and a little later it was replaced by N.Sedova-Trotskaya, which led to the strengthening of the department - this allowed us to do a lot for the preservation of monuments. The work introduces new sources that describe in detail the plot of the relationship between the monastery and the new government, the scrupulousness of preparing for the restoration of the monastery and the feat that scientists performed to save the monument from further destruction as a result of shelling. But all the efforts of scientists for the restoration were in vain, in a great hurry, on the night of December 16-17, 1929, the Cathedral of the Miracle of Archangel Michael was blown up. The restorers did not have time to finish the work on measurements, photo fixation, and even save the frescoes already removed from the walls, which were prepared for museumification.

Abstract: The article summarizes the results of a two-year study of the issues related to the virtual reality and augmented reality technologies use to virtually reconstruct Moscow Bely Gorod in the 16th-18th centuries. The authors describe mathematical methods, software and hardware which grant access to the historical reconstruction of historical urban landscapes. An important feature of the reconstruction is the source verification module which was used to construct three-dimensional models of the landscape, buildings and the general scenery. The article names the basic principles which the verification module and its interface are based on and considers some optimum problems solved when constructing the interface. The project uses a hybrid motion tracking system as a combination of optical and inertial data. The archival sources used in the reconstruction process are presented in the virtual environment by means of a 3D graphical user interface for the virtual reality. The information displayed is generated from the database of historical sources which includes information about the urban development and individual buildings of Bely Gorod, their parts, location, purpose, owners and construction date. The database contains both text and graphic historical sources. The results obtained also include new algorithms, software and hardware systems as well as the experiment results. 

Abstract: The article sets a problem focusing on how to optimize the order of 3D user interface for virtual reconstruction of Moscow historical center landscape in the 16th-18th centuries. To work with the interface a virtual reality headset, a motion tracking system and an eye-tracker were integrated. Spatial representation of the historical reconstruction is accompanied by a specialized interface that allows one to access the source database. The authors introduce a criterion that provides for estimating the optimum order of interface elements in the virtual space. The problem is handled in case there are unknown factors such as the size of user's hands, deviations in the position of an interactive object and restrictions related to the disposition of interface elements. The article sets the general problem and solves some internal problems related to the construction of acceptable multiple dispositions of interface elements and the modeling of eyesight movement from one interface element to another. The article is the first to suggest an algorithm to numerically optimize the interface in 3D virtual space modeling the relief and historical buildings in the center of Moscow. It provides for user’s movement and gives access to historical sources which are the basis for virtual reconstruction of the heritage understudy.