A masterpiece of illumination is the circa 1415 book "Les Très Riches Heures du" this duke
[DOC] [TLE] Les Trs Riches Heures du duc de Berry - Wikipedia [PAR] The Trs Riches Heures du Duc de Berry is the most famous and possibly the 
best surviving example of French Gothic manuscript illumination, showing the 
late International Gothic phase of the style.