This is an astonishing oversized architectural study of Renaissance buildings in France.
These sketches of "hunting lodges" with typical 16th-century architecture were done in black pencil.
 On the left side, you have Coupesarte Manor in Normandy. The central drawing is Chateau de Chambord. The study on the right is Valabre Mansion in Provence. 
The study is ornate with an original wood frame with acrylic glass protection.
Please check the three pictures for the actual view of those existing buildings.
 
Note:
Coupesarte Manor is located near Lisieux, Pays d'Auge, France, has preserved its original half-timbering frame and offers exceptional architectural unity. Built on moats in the 15th Century, the barns, stables, and cowsheds date from the 17th Century.
The Château de Chambord at Chambord, Loir-et-Cher, France, is one of the most recognizable castles 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 built by King François 1er of France.
The castle was built around 1519-1547.
Chambord is the largest castle in the Loire Valley. 
Francois 1er had it built to serve as a hunting lodge. He maintained his royal residences at the castles of Blois and Amboise. 
The original design of Chateau de Chambord is attributed, though with possible uncertainty, to Domenico da Cortona, and it is also possible that Leonardo da Vinci was involved in the design of the chateau.
Valabre Mansion, or The Hunting Lodge of King Rene, was built around 1573-1583.
Pavillon de Chasse du Roy René in Gardannes (Bouches du Rhone, France): King René, King of Sicily, Count of Anjou and Provence, becomes the owner of the communal domain and administers it from 1454 to his death in 1480. 
The hunting lodge, which still exists, is commonly called the "Pavilion of King René" or "Pavilion of the Four Towers." This building was never the property of King René because its construction was around 1573-1583, 93 years after the sovereign's death. One of the last owners added balconies and columns to the original building.
The original austere building has a simple but very organized plan, similar to Italian villas.