Before him, Francis I also had dreamt of an island suddenly appearing on the Loire river for his castle. He started working on it as early as with a team of historians, geologists, landscapers, but also archaeologists and scientists in charge of collecting all information necessary to a truthful reconstitution of the gardens. But the absence of its famous Car gardens, which fell in disuse during the French Revolution, wore down the landscape around the castle for a long time. According to the director of the domain, "he made his mind because of the size of the project, unique in a unique place". The archives of the royal construction site did not survive the raids of the French Revolution, and no modern text in relation with the construction shows the name of the person who imagined this architectural emblem. According to the director of the domain, "he made his mind because of the size of the offer, unique in a unique place".