The restoration of The chapel of The Blessed Sacrament was carried out under the initiative of The St John’s Co-Cathedral Foundation, completed in March 2010. The walls and dome within the chapel suffered from water infiltration and rising damp which lead to salt migration and losses of paint and gilding. The interior carved walls and dome were cleaned and re-gilded. The paintings of the Annunciation by Mattia Preti, the Assumption of the Virgin, the Coronation of the Virgin, and the tombstone of Claude de Blot Vivier were also restored.