A Castle built for a King of France in 1510 with 440 rooms and 365 fireplaces. One of the Renaissance masterpieces. The royal Chateau de Chambord at Chambord, Loir-et-Cher, France, is one of the most recognizable Chateau in the world because of its very distinctive French Renaissance architecture which blends traditional French medieval forms with classical Renaissance structures. The building, which was never completed, was constructed by King Francis I of France. Chambord is the largest chateau in the Loire Valley; it was built to serve as a hunting lodge for Francis I, who maintained his royal residences at the Chateau of Blois and Amboise.