The Kings of France had first-hand knowledge of the new Italian style, because of the military campaign of Charles VIII to Naples and Milan (1494), and especially the campaigns of Louis XII and Francis I (1500–1505) to restore French control over Milan and Genoa. They brought back Italian paintings, sculpture and building plans, and, more important, Italian craftsmen and artists. The Cardinal Georges d'Amboise, chief minister of Louis XII, built the Chateau of Gaillon near Rouen (1502–10) with the assistance of Italian craftsmen. The Château de Blois (1515–24) introduced the Renaissance loggia and open stairway. King Francois I installed Leonardo da Vinci at his Chateau of Chambord in 1516, and introduced a Renaissance long gallery at the Palace of Fontainebleau in 1528–1540. In 1546 Francois I began building the first example of French classicism, the square courtyard of the Louvre Palace designed by Pierre Lescot.