Although Gothic in style and built in the 14C, the Duomo was remodelled in the 20C. Its façade is adorned with a flamboyant doorway, which opens into a beautiful interior decorated in Baroque style (organ loft, pulpit, tombs, altarpieces and historiated stalls). The vault of the chapel of the Holy Sacrament boasts trompe-l'oeil frescoes by Tiepolo, who also painted the ceiling of the Oratory of Purity, to the right of the cathedral.