Built on the remains of the site of Roman thermal baths that date back to the second or third century, the west side of the Musée Cluny is one of the most remarkable Gallo-Roman monuments. In the Middle Ages, houses were built into the partially ruined building and at the end of the fifteenth century the present edifice was erected on the Roman foundations and walls. Not only is this a museum of ancient history, it is a monument to it. The collection was put together by Alexandre du Sommerard and his exhibits of armour, chests, ivories, mirrors and hangings draw those interested in the medieval and Renaissance periods. However, the most popular exhibit is La Dame ˆ la Licorne - The Lady with the Unicorn: six enigmatic scenes featuring a beautiful woman flanked by a lion and a unicorn. Dating from the late fifteenth century, it is amazing in its intricacy, the ground alone of each panel is a delicate red worked with a thousand tiny flowers, birds and animals.