Antoine M
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This is also known as the Palace of the Dukes of Lorraine which is now the Museum of Lorraine. When I visited it was closed for major renovation until 2023! The only other part of this museum opens is the Church of the Cordeliers which is a tombs church, the burial site for the Lorraine family. It has collections of art history with an archeological collection in one of the buildings in the back of the courtyard. Pity that it was closed but the outside façades gave a glimpse of the stupendously magnificent architecture that was once the Dukes Palace of Lorraine.