Four aisles, erected in the XVIth century over the arched galleries, were single-cupola side chapels with thin walls made of one brick tier. Floors inside were paved with a patterned ceramic tiles, replaced in the XIXth century by carved tiles of white stone with black mastic ornament. The interior was decorated with iconostasises, one of which was placed in the southern gallery. The aisles were sanctified in memory of the cathedral of Archangel Michael and archangel Gabriel at a later date (north-eastern aisle), in memory of the cathedral of Our Lady (northwestern aisle), in memory of the Entry of Jesus into Jerusalem (south-western aisle), in memory of George and Alexander Nevsky at a later date (south-eastern aisle).
