San Pietro, Piacenza

San Pietro is a Roman Catholic church in central Piacenza, Emilia Romagna, Italy. The church was built over the site of an ancient church titled San Pietro in Foro (St Peter of the Roman Forum).

A church was present at the site by 809, rebuilt after a fire in 1174. In about 1583, Duke Ranuccio I Farnese had invited the Jesuits into the duchy, and ceded them this site. They razed the ancient structure and built the present church from 1585 and 1587. The belltower dates to the 17th century. From 1607 till their expulsion, the Jesuits had a seminary at this site. The Jesuits were expelled in 1768 from the duchy; but the Jesuits returned some decades after the Napoleonic wars and remained briefly until 1848 at the church of San Pietro. Since 1893, San Pietro was made a parish church. In the early decades of the 1900 the church underwent further restoration work, including of the present façade.

The adjacent Palazzo del Collegio dei Gesuiti was completed in 1593, and now houses the Biblioteca Comunale Passerini Landi. In 1840s, the library was said to house thousands of volumes of sacred and profane books, as well as private letters and manuscripts.

In the chancel there are frescoes by Roberto de Longe and a baroque main altar derives from a chapel of the cathedral .

An inventory from the 1840s, noted that the church contained an altarpieces of St Aloysius Gonzaga and St Joseph with child Jesus in his arms by Giovanni Battista Tagliasacchi. There was a Deposition by Giovanni Rubini. A canvas of San Francesco di Girolamo was a copy of a work (1841) by Francesco Podesti. There was a St Francis Xavier by Clemente Ruta. In the sanctuary there was a St Peter and Paul on the Road to Martyrdom by Ercole Graziani. In the chapel of St Ignazio, there was a painting of the saint by Tagliassachi and a Sacred Heart of Jesus by Gaspare Landi. In the church there was also a canvas depicting St Stanislao Kostka, by Giovanni Gioseffo dal Sole There was a copy of an Annunciation by Guido Reni; an Archangel Raphael and Tobias attributed to Giovanni Bottani or his brother; a St Ursula by Marcantonio Franceschini; and a St Jerome, copy of a Guercino. The church had a portrait of Paolo Casati, a polymath jesuit. A painting in the church of St Ferdinand of Spain attributed to Antonia di Borbone, daughter of Duke Don Ferdinando.

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