The Musée de Cluny is set within a remarkable historic building that combines a 15th-century Gothic abbey with the ruins of ancient Gallo-Roman baths from the 1st century. This unique setting gives the museum a special character, connecting visitors to both the medieval and ancient past of Paris.
Inside the museum, an impressive collection of medieval art and artifacts awaits. One of the main highlights is the celebrated series of tapestries known as "The Lady and the Unicorn." These beautifully woven works are admired for their mysterious symbolism and vivid detail, depicting scenes that continue to captivate art lovers and historians alike.
The museum also displays a papal Golden Rose, a rare and precious object that once served as a symbol of honor given by the Pope. In addition, visitors can see the original stone heads that once adorned the facade of Notre Dame Cathedral. These sculpted faces, carefully preserved, provide a close look at the craftsmanship of medieval artists and the rich history of Paris’s iconic landmarks.
Source - https://en.wikipedia.org/wiki/Mus%C3%A9e_de_Cluny