The book tells the story of Clarté, Le Corbusier's first apartment building. The steel skeleton building completed in Geneva in 1932 is a precursor of the Unité d'Habitation. In 2007 the external envelope was repaired, followed by a refurbishment of the interior, in which preservation requirements are exemplified. The building log book is illustrated with new and historic drawings and photos, and enriched with the building's history.

Sabine Nemec-Piguet (Denkmalpflege Genf), Arthur Rüegg (Corbusier-Experte), u. a.