The page for December depicts the end of a wild boar hunt in the forest of Vincennes, with the chateau in which the Duke de Berry was born, on November 30, 1340. At that time, the Château de Vincennes had not reached the proportions shown here, having been completed nearly 25 years later by Charles V. Here are seen the huge rectangle formed by the walls and nine towers, with the dungeon rising in the center.
The action takes place in the forest of Vincennes, which attracted many kings of France. Louis VII built a hunting lodge there; Philippe Auguste undertook the construction of a small château enlarged by Saint Louis, who is believed to have dispensed justice under one of its oaks. This has been a successful hunt. The huntsman at left has speared the boar, and the hounds have set upon it. The victory is proclaimed by the hunter at right, shown blowing the news on his horn. The bloodhounds and boarhounds are painted with amazing realism, suggesting that the artist was familiar with the hunt.
In the tympanum, Saggitarius pursues Capricorn across the skies.