This volume represents an important tool for getting to know every aspect of Leonardo da Vinci's work: his pictorial technique, his scientific and technological investigation, his study on anatomy, his Codices, and every suggestion produced by his genius. All works and paintings are accompanied by descriptive and technical sheets, and ample space has been given to images and details, to the updated report on his most controversial works, to those of recent critical acceptance, and to the masterpieces that have animated the international debate such as The Encarnate Angel, the Salvator Mundi, and La Bella Principessa (Portrait of Bianca Sforza). The narrative captions reveal the most curious aspects of the history of each painting. Thanks to the direct contribution of collectors and museums the photographic reproductions of paintings and works reflect the last restorations.