Geometrical harmony . The Experience of the Study of Proportionality in Architecture" is a fascinating and in-depth study written by the author and architect Shevelev, which immerses the reader in the world of architectural aesthetics and mathematical harmony. This book will be a real discovery for anyone interested in architecture, art, design and philosophy of spaces. In her work, Shevelev explores how proportions and geometric shapes affect the perception of architectural objects. He analyzes how different cultures and eras have used geometry to create harmonious spaces, and how these principles continue to influence modern construction. The reader will be able to learn about such famous architectural masterpieces as the Parthenon in Athens, St. Peter's Cathedral in Rome and many others, which were built with strict proportional rules. The book is intended for a wide audience: from students of architectural faculties to professional architects and designers, as well as for anyone who simply loves beauty and harmony in the world around him. It will be interesting for those who want to understand more deeply how geometry and proportions affect our perception of space and how these principles can be applied in modern design. Shevelev skillfully combines theory and practice, which makes his work accessible and understandable even for those who do not have a special education in architecture. The topics raised in the book cover not only the technical aspects of design, but also philosophical reflections on beauty and harmony. Shevelev asks important questions: what is harmony in architecture? How does it affect our perception of space and our place in it? These reflections make the book not only a textbook, but also a source of inspiration for philosophical reflections on life and art . The author's style is distinguished by clarity and depth, which allows the reader to easily assimilate complex concepts. Shevelev uses many illustrations and diagrams that help to visualize the principles described and make reading more fascinating. His approach to the study of proportionality in architecture is based on years of experience and deep knowledge, which gives the book special value. If you are interested in such works as “Architecture and Utopia” or “Harmony in Architecture” by other authors, then “Geometric Harmony” will become not just another book for you, but a real guide to the world of architectural aesthetics. You will be able to see familiar buildings and structures from a new angle, to realize how important proportionality is in creating a harmonious space. In conclusion, “Geometric harmony . The Experience of Researching Proportionality in Architecture is not just a book about geometry and architecture, it is an in-depth study that makes you think about how we perceive the world around us. Shevelev offers the reader a unique opportunity to look at architecture as an art in which harmony and proportion play a key role. This book will surely find a response in the hearts of all who appreciate beauty and strive to understand how it is created.