It is located near the Church of Saint Dominic, in the quarter of the Loggia, within the historic centre of Palermo.

In the early 18th century Giacomo Serpotta realized a sumptuous stucco decoration.

Moreover, the oratory is decorated with several paintings of important artists like Matthias Stom; Guglielmo Borremans; Geronimo Gerardi (a Nativity); Pietro Novelli; Valerio Castello; and Luca Giordano.

The most prominent painting is the main altarpiece by Anthony van Dyck, depicting the Madonna of the Rosary with the saints Dominic, Catherine of Siena, Vincent Ferrer, Olivia, Nympha, Agatha, Christina and Rosalia.

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