This complex that makes up the Musées de Sens is set in the buildings of the old archbishopric and restored synodal palace with its beautiful tiles glazed by Viollet-le-Duc. The François I Wing and Henry II Wing are dedicated to the history of Sens and its people (interesting Gallo-Roman relics). The Cathedral Treasure is one of the most abundant in France. It houses a magnificent collection of textiles and religious clothes, ivory pieces and silverware.