This publication collects many unpublished material from Otl Aicher, a legendary figure in contemporary design. The eighty unpublished drawings of the Metro Bilbao corporate image project stand out, a commission resulting from his friendship with Norman Foster. In these pages you will also be able to discover the creation processes of other famous works by Aicher, such as those of Braun, the Munich Olympics '72, Bulthaup or Isny Allgau, as well as unpublished materials from his architecture projects for Rotis, an old agricultural complex which became a place of residence and work.