Identification of critical altitude of buildings in historical center of a large city

The authenticity preservation of buildings in the historical center of the city and its panoramic perception, are impossible without regulating the number of storeys of new buildings that appear during the reconstruction, renovation and development of green areas.Purpose: Methodology development of historical and architectural environment of the large city center to identify the critical altitude of historical buildings.Methodology: the landscape visual analysis, based on theoretical and practical experience in the critical altitude principle.Research findings: The proposed methodology was tested in 20212022 in the historical center of the city of Penza. It is highly appreciated by the professional community. This methodology includes research of Russian and foreign scientists and practical  approaches. High quality of results are obtained.Practical implications: The proposed methodology is quite universal and can be used in various historical cities, small towns, and also in largest cities. It can be used both as a whole and in separate stages, depending on the urban planning tasks.