The newest architecture as an information carrier takes on fresh forms. It reflects the flow of information, fits into the environment, and interacts with the external and internal space. As a result, a new boundary area of architectural activity emerges – «quasi-architecture», which is located between architecture and art, architecture and construction, architecture and multimedia space. The purpose of the study is to consider the features of quasi-architecture and the principles of its organization. The main methods of research are logical, complex system-structural and system approaches, which allow studying this phenomenon in the aggregate and the interaction of its individual parts and classifying the features of its development. The dialectical method that includes analysis and synthesis, made it possible to identify the quasi-architecture mainstream’s patterns. The historical-genetic method showed the origins of conceptual trends. The result of the study characterizes the conceptual directions of one mainstream of the newest architecture – «quasi-architecture». Quasi-architecture reflects the imaginary space; it seems to exist and not exist, being on the verge of reality and unreality.