The drawings you can see on that page were made by Louis XIV at the age of 7

"La Fondation Saint-Louis" ownes 70 drawings by Louis XIV, here you can see 8 of them
These drawings of great quality (for a 7-year-old-boy) have all something in common (all 70 of them). All of them represent buildings (houses, churches, bridges), but no people or animals
Louis XIV gave this drawings to comte de Toulouse in 1688 as a gift. And after centuries that album with drawings still exists in house of Orléans

Louis 7 years old (full picture and detail) by Philippe de Champaigne: