The choir and crypt are in the Romanesque style and stand out by their simplicity. The crypt contains the tombs of Saint Ursmarus and Saint Erminus, as well as tombstones from other abbots.
In a simple yet distinctive manner, the choir and crypt embody the Romanesque architectural style. Within the crypt, one finds the graves of Saint Ursmarus and Saint Erminus, as well as memorial stones from other abbots.