Model of a sightseeing attraction in the central part of Irkutsk as the basis for the integration of development in a historical city. Periodization of the formation stages. The current state

The work aims to study the issue of the urban fabric integrity of the historical center of Irkutsk. The research focuses on the interaction of urban morphotypes with their functional use in conjunction with the guidance of movement around the city. Each historical city was developed progressively, forming an urban planning structure and its interconnections with the fabric of the built-up area over the centuries. Irkutsk is characterized by five main stages in the evolution of development: 17 th –early 18 th cc. The formation of a suburban estate development around a small fortress (ostrog). 2. Mid-18 th The transition from irregular to ordered development, architectural landmarks were formed. 3–4. Late 18 th –19 th centuries. The central streets acquired the public status. Implementation of reference designs. 5. 20 th century. Incorporation of standard sections of blocks of flats and infill development into the urban fabric. The Historic Center of Irkutsk as a sightseeing attraction model with its evolutionary established consistent patterns is the basis for the urban fabric integration. The study identifies the main evolutionary stages in the development of this place of interest starting from the period of the initial development of the territory (2 nd half of the 17 th – till the early 21 st centuries). The article analyzes and classifies the typology of development and the main periods of the urban fabric formation. Moreover, the research clarifies the boundary of a sightseeing attraction and determines its core/periphery structure. The article also considers the periodization of the Irkutsk authors who formed the historical part of Irkutsk.