Down the stairs the visitor enters a sequence of galleries gleaming with gold, seemingly illuminated by softly filtered evening light and flickering candles: here be a treasure house of stories in paint: saints, sinners and the narrative of the divine made flesh, from the Annunciation to the crucifixion. Some 40 Italian altarpieces, from the 13th through to the 15th centuries – some whole but most just fragments – are theatrically displayed to suggest the atmosphere of late medieval and early Renaissance Italian churches, monasteries and convents.