The exhibition revolves around the works of the Prussian architect and restorer Paul Tornow, who restored the cathedral during the Annexation together with French sculptor Auguste Dujardin. It was conceived by the DRAC with scientific commission from Rafaêl Florian-Helfenstein. The exhibition, conceived by the DRAC and with scientific commission provided by Rafaêl Florian-Helfenstein, revolves around obscure works that were scorned for a long time completed by the Prussian architect and restorer Paul Tornow (1848 – 1921), who restored the cathedral over nearly 30 years together with French sculptor Auguste Dujardin. Held in Metz, the Tornow Archives enable his work and that of Dujardin to be captured. The exhibition is part of a wider approach aiming to evidence the interesting architectural heritage of the Annexation.