 In 1968 the former "confessio" (tomb) of St. Nicholas was roofed over.The floor of the church is made of "opus sectile", a mosaic of coloured marble, and there are some remains of frescoes on the walls.An ancient Greek marble sarcophagus had been reused to bury the Saint; but his bones were stolen in 1087 by merchants from Bari, and are now held in that city, in the Basilica of Saint Nicholas.