Today, people are increasingly drifting away from nature in an age of accelerated lives and information technology. Only the natural environment can create comfortable, ecological conditions for human life. It has become evident that the biological component of the domain has been noticeably reduced in the big cities, and the appeal to the global architectural community of the ecological and aesthetic aspects of design and construction, which contribute to the comfortable and sustainable development of urban space, has become particularly relevant over the past decades. In a big city, architecture is omnipresent. Hence, the architectural-spatial environment should be solved as much as possible in the context of the natural environment, embodying not only the material needs of a person but also spiritual ones. The current unfavorable environmental, energy, and economic situation in the world requires new methods for designing and building the architecture of new and reconstructed old buildings. The article discusses the issues surrounding the formation of modern energy-efficient architecture in the context of its relationship with the natural environment through the use of modern design solutions. The article is based on surveys of social facilities made by the authors from 2017 to 2021 in Eurasian and European cities. The article analyzes a new mechanism of architectural formation based on the shape formation of an architectural object, the content of the architectural shape, the aesthetics of perception, and the organization of eco-space.