Interior of St Johns CoCathedral Valletta Malta St Johns CoCathedral was built between and by the Maltese architect Gerolamo Cassar Originally the church of the Knights of St John the cocathedral came to rival the archbishops cathedral at Mdina in importance The ceiling and side altars are decorated with scenes from the life of St John painted by the Calabrian artist Mattia Preti and the building houses a small collection of paintings by Caravaggio
