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Between 1685 and 1690 Giacomo Serpotta was responsible to enhance the entire environment of the rectangular room with an ecclesiastical iconography based on the exempla of the Mysteries and Virtues. On the side walls the fine stucco decoration, composed of putti, allegorical statues and theaters, illustrates the Sorrowful, Joyful and Glorious Mysteries.
The decoration of this oratory belongs to the long series of church interiors where Serpotta covered the walls with stucco figures.
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