This book presents a series of monographs on key figures in modern and contemporary architecture. It oers a reading of the practice of design which emphasises the value of freehand drawing as part of the creative process. Revealing secrets and insights and showing the various observation techniques and languages, characters, forms and means of communication. Studio mk27, led by architect Marcio Kogan, is one of the most important names of Brazilian contemporary architecture. Their work follow a precise path which is narrated in this book: sketches as the first intuitions of a project, preliminary drawings that give shape to the idea, diagrams that represent the architecture as never before, all the way to short movies to narrate the completed projects. These steps together form an unique and poetic statement of the world of architecture.