Modernism is an original, mysterious, and sometimes frankly sensual style that subjugated fine art at the turn of the 19th and 20th centuries. Many famous architects, painters, graphic artists, and masters of applied art are associated with this artistic phenomenon, but perhaps the brightest and most significant are the names of Antonio Gaudi, Gustav Klimt and Alphonse Mucha. This book is dedicated to these three authors, which, however, is not limited to their creative heritage within the framework of the mentioned style, but allows us to trace the gradual development of each master, from the earliest works to mature works.