Near the Massimo's Theatre, the Church of St. Ignazio at Olivella is one of the largest religious architectural buildings of Sicily. In 1598, thanks to the donation from the Senate of Palermo and generous people it started the construction of the church, solemned inaugurated in 1622, year of the canonitation of St Filippo Neri, it was consacreted in 1711.  It has a basilical plant at three naves, five chapels by side and two major chapels on the transept. 

Of great value it's the canvas of the Arcangel Gabriele on the first chapel on the left from the main access, made by Pietro Novelli. The canvas in the altar was made by Sebastiano Conca in Rome and represent the "Trinity in Glory". 

In the place where was the birth house of St. Rosalia, patron of Palermo, couldn't miss a chapel dedicated to Her, following the clausole to the acquisition of the area by the Oratorians. In the altar the canvas "St. Rosalia crowned by the Virgin" of Filippo Randazzo. 

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Dedicated to the founder of the Congregation of the Oratory, St. Filippo Neri, its the last of the architectonical construction to the Order, at it belongs not only the church of St Ignazio but also the Oratory and the House (the today Salinas's Museum). 

The Oratory of St. Filippo Neri, has an unique rectangular hall, divided in three naves by eight columns, four for each side. The altar, made of precious stones, brings the reliquarium of St. Feliciano martyr, patron of the Secular Oratory, the secular corporation here located during the soppression of the religious order, and thanks to them it wasn't confiscated (as it happened to the church and the House). 

Upper the altar, the oval painting by Gioacchino Martorana represent the Saint, all around angels in glory. 

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