 Internally, the stained glass windows depict bishops and martyrs of the first centuries and the cast-iron columns are decorated with polychrome angels.A statue of Joan of Arc, by Paul Dubois, was erected in the church in 1896.The church features paintings by William-Adolphe Bouguereau, Jean-Hippolyte Flandrin, Émile Signol, Alexandre-Dominique Denuelle and sculpture by Albert-Ernest Carrier-Belleuse and Henri Chapu.