In the 16th century, the Loire Valley was truly the heart of France's political and artistic power. Crowned King in 1515, the young Francis I wanted to assert his power in the eyes of all and become the most enlightened monarch of his time. At Chambord, Blois and Amboise, he built sumptuous castles for himself and his successors, in which an aesthetic and social movement was to develop that would change everything in its path.