 During the early years of the 16th century the French were involved in wars in northern Italy, bringing back to France not just the Renaissance art treasures as their war booty, but also stylistic ideas.In the Loire Valley a wave of building was carried and many Renaissance chateaux appeared at this time, the earliest example being the Château d'Amboise (c. 1495) in which Leonardo da Vinci spent his last years.The style became dominant under Francis I (See Châteaux of the Loire Valley).