Mérimée's other important cultural legacy is the system of classification of historic monuments that he established, and the major sites that he saved, included the walled citadel of Carcasonne, and his part in the foundation of the National Museum of Medieval History in Paris. The French national list of heritage monuments is called the Base Mérimée in his honor. Another part of his legacy is the discovery and preservation of "The Lady and the Unicorn" tapestries now on display in the National Museum of Medieval History.