The Renaissance ornamentation is concentrated around the windows and turrets in the upper courtyard.

In the early 16th century, after the fire that burnt much of the town in 1487, stone houses were built, such as the Hôtel Lallemant, a masterpiece of the early Renaissance. It is built on the Gallo-Roman wall, which explains the sloping passageway linking the upper courtyard (where the main entrance was situated) and the lower courtyard (now the visitors' entrance) and leading to the inside spiral staircase. Now the Museum of Decorative Arts, the Hôtel Lallemant houses collections of furniture, paintings, tapestries and objets d'art from the 15th to the 17th century.