The article examines spatial and architectural structure of the city. System analysis and spatial syntax were used as a scientifically based approach in the study, which allows to investigate the relationships between spatial planning and a number of social, economic and environmental phenomena. It was established that the spatial planning organization of the city center is a complete system consisting of two subsystems - spatial planning and volume-spatial. Spatial Syntax applies the concept of configuration in urban spaces to reveal social and behavioral patterns. It was established that the configuration of public spaces determines the nature of activities and potential directions of people's movement, and therefore, the use of public space, types of activities, directions of conservation and methods of environmental design. The author identified two types of theoretical configurational models of public space: a) centric; b) linear-axial; which, according to the principle of isomorphism, determine the pattern and relationships of public spaces in most cities. The legality of using space syntax and spatial analysis for the analysis of the architectural environment is confirmed.