Former seat of the Parliament of Normandy, it is undoubtedly one of the most important and finest achievements of civil architecture at the end of the Middle Ages. The oldest part is the west wing (on the left), built from 1499 to house both the Parlor to the Bourgeois and the Exchequer of Normandy (high judicial and financial court).

From 1508, we undertook to enlarge it with a new perpendicular building, the Royal Palace, finished around the middle of the 16th century. Meanwhile, Francis I had transformed the Exchequer into Parliament. This central wing has received a most extraordinary decoration. Standing out on the slope of the roof, one can admire large skylights and a balustrade bristling with pinnacles, and linked together by openwork buttresses. In the 19th century, the building was extended towards rue Jeanne d'Arc and rue Socrate.