Abstract: The object of this research is modern museum complexes located in an urban or natural environment and aimed at connecting with the surrounding space. The subject of the research is the principles and design techniques of organizing the subject-spatial environment of modern museums, existing in close unity of architecture, design and landscape. Design techniques for the formation of an integral museum environment using landscape and design methods of shaping are revealed.
The study focuses on the design potential of combining the interior, exterior and adjacent territories in order to preserve regional characteristics, natural and cultural environment. The article provides a comprehensive overview and classification of design concepts of museums, reveals the principles of combining cultural and educational functions of museums with sports and recreational ones.
A systematic analysis of modern museum environment projects is carried out in the unity of axiological, ecological, artistic, aesthetic and contextual approaches. Based on this, the principles of organizing the museum environment as an ecosystem are identified and classified.
The authors introduce the concept of "museum ecosystem". The main features of museum ecosystems are formulated. The design methodology of an ecologically appropriate human habitat synthesizing technical, social and artistic solutions is proposed, the main methods of designing artificial ecosystems are identified using the example of modern museums.
The conclusion is made about the trend of designing museum complexes as integral ecosystems, it is noted that the design of modern museum complexes, when achieving the synthesis of natural forms, design tools and high technologies, allows you to organize the museum environment as an ecosystem with high comfort indicators without disturbing the natural environment.

Abstract: The object of the study is multilevel open urban spaces. The subject of this study is the general principles and design techniques of the organization of the subject–spatial environment of multilevel spaces. The article analyzes and systematizes a large project material devoted to new global trends in the organization of multi-level open public spaces. For the first time, a comprehensive overview of their conceptual varieties and compositional features is given. Design techniques aimed at the formation of multilevelness in the urban environment using landscape and design methods of shaping are revealed. A systematic analysis of the principles of the organization of multilevel open spaces in the unity of axiological, ecological, artistic, aesthetic and contextual approaches is carried out. The article identifies current trends in the organization of open multi–level urban spaces, defines them as separate fragments of a transportless urban environment, representing one or more tiers, at least one of which is above ground or water level, intended, as a rule, for recreation and walking. Among them there can be both monofunctional and multifunctional spaces, but they are all united by such qualities as recreational function, accessibility and openness. Typological types are proposed for the first time: multi-level pedestrian zones and additional levels of transport interchanges; tiered gardens and parks; above-water recreational spaces; mini-courtyards integrated into a multi-storey building; green roofs for various purposes; multi-level playgrounds. The conclusion is formulated that the design of multilevel open urban spaces is an actual trend of modern project culture and helps to solve various project and social tasks.