This concise French volume offers an introductory survey of the visual language of medieval architecture. Drawing on a range of examples—from early baptisteries to round structures—the author examines how symbolic meaning is encoded in stone, vault, and ornament. The text highlights recurring motifs and their theological or civic significance, providing readers with a framework for interpreting the iconography that defines the medieval built environment. Though brief, the work serves as a useful reference for students and enthusiasts seeking to understand the interplay between form, function, and belief in the architecture of the Middle Ages.