The author’s objects of interest are methods, emerging techniques, focuses, trends, fields, and concepts of an architect’s creative work in the end of the 20th century, as well as modern architectural styles and their tendencies, i.e. the reason why an architect sees a building or object at a certain place and time in one particular way, not another. The author rather focused on researching methods and techniques employed in creative work than studying the practical ones related to technical aids. For the purpose of better understanding of modern architectural phenomena, the historical concept of style was reduced to analysing the approaches used and creative architectural methods applied in design. Thus, the author analyses and attempts to formulate the most topical guidelines and trends in the modern architectural theory.