Cœur bleu, a journey in Brittany, is a book of photographs taken over one year around the Château des Flégés, which marked part of the photographer's childhood - brief visits two or three times a year, just enough to make him shiver with excitement. He remembers a pond of stagnant water, a treasure said to be hidden beneath the seventh step of a granite staircase, and a sickly great-grandmother who almost never left her room.