The stained glass windows that decorate the 42 large bays were made by the “Atelier F Nicolas Roermond”, in Dutch Limburg. The last stained glass window was made in 1905 (Saint George).

In the lower part, the stained glass windows represent saints who were chosen in connection with the local religious context or the events that marked the life of the Catholic Church at the time.

In the upper part, the windows are decorated with stained glass windows with geometric patterns in various shapes.