The online exhibition at the Limédia Galleries “La Cathédrale 800 ans de mystères !” (The Cathedral: 800 years of Mysteries!) promotes the heritage collections from the Metz Libraries and Media Libraries relating to Metz’s iconic monument. Metz Cathedral is a unique monument both in terms of its architecture and its history. It has been witness to the city’s development as well as the lives of several prominent figures. It has been a source of inspiration for many artists and illustrators. It is a well-known image, but still remains a place full of mystery and legend. The exhibition at the Limédia Galleries “La Cathédrale 800 ans de mystères !” (The Cathedral: 800 years of Mysteries!) charts these different aspects by shining the spotlight on the heritage collections from the Metz Libraries and Media Libraries.