Sala delle Asse

The walls and ceiling are painted with a trompe-l'œil scheme depicting trunks, leaves, fruits, and knots, as if it was in the open air and not within a castle. Art historian Rocky Ruggiero describes the decoration of the square, fifteen-by-fifteen-meters room as creating the effect of a natural pergola as an architectural feature. Ruggiero suggests that Leonardo drew upon all of his scientific research into natural systems as he painted the masterful illusion that resembles a grove of mulberry trees.