Following Yves Klein USA, Yves Klein Germany and Yves Klein Japan, this book, prepared in collaboration with the Yves Klein Archives, presents nearly 150 archival documents, photographs and letters linked to the artist and his travels through Italy. Through his travels, his exchanges and his artistic or personal encounters, the reader discovers the relationships that Klein was able to create there, in particular with artists such as Lucio Fontana or Piero Manzoni who, like him, knew how to leave a lasting impression on their time. Assisi, Venice, Rome, Milan: each of these cities left a mark on the life of the artist of the blue, whose first exhibition abroad in 1957, Proposte monochrome, epoca blu, took place at the Galerie Apollinaire in Milan.