The now fallen cupola was supported by four large pillars and large, slightly ogival arches. The exterior walls do not express the volumes and space of the interior but they are given a vertical articulation by a series of small blind arcades carried on tall half-columns. This rhythm is interrupted by a taller and larger arch corresponding to the central portion of the church. Two deep triangular niches are cut not only into the apse but also into the large walls, that correspond to the cupola and the internal projections of the wall.
The building which lacks both drum and cupola is badly damaged at the entrances and on the north-western angle as well.}}