This small museum is housed in the former chapter house adjacent to the basilica and tells the story of Eugène Viollet-le-Duc's restoration of the Vézelay church in the mid-19th century. Viollet-le-Duc was the greatest French architectural restorer of his era — he also worked on Notre-Dame de Paris and the walled city of Carcassonne — and his intervention at Vézelay saved the building from collapse.
The museum displays original Romanesque capitals removed during the restoration alongside Viollet-le-Duc's architectural drawings and models. It is a small but rewarding stop that deepens your appreciation of what you see inside the basilica.