Saint Peter’s (Saint-Pierre) church was formerly an abbey church of the Benedictines. The abbey church was founded in the 7th century with the help of Queen Bathilde, the wife of Clovis II. The most important vestige of the church is a convent buildings located on the south side, later rebuilt in early 18th century, and nowadays served as a school named Lycee Marceau.
The church was destroyed several times by Normans between 858 and 911. It has also been damaged by fire in 1077 and 1134. Reconstruction of the apse and ambulatory has taken in 1165 under the direction of Bilduard with less financial support. The tomb of Gilduin, a bishop of Breton, who died in 1077 and buried in the church was discovered during the work. This discovery encouraged donations from the congregations and allowed the continuation of the reconstruction of the church and also supported the construction of Chartres cathedral tour and royal portal.
The most ancient part of the church is the bell tower on the west side, built around the year 1000 AD. The nave and the aisles date from the early 13th century. The church was finally completed around the year 1320. During French revolution, the church has seized and served as a saltpeter factory - then finally returned to its original function as a worship place in 1803 and nowadays regularly host the Organ Festival. St. Peter’s church opens from Monday to Friday at 2pm to 6pm and you can enter the church for free.
References:Royal Palace of Naples was one of the four residences near Naples used by the Bourbon Kings during their rule of the Kingdom of the Two Sicilies (1734-1860): the others were the palaces of Caserta, Capodimonte overlooking Naples, and the third Portici, on the slopes of Vesuvius.
Construction on the present building was begun in the 17th century by the architect Domenico Fontana. Intended to house the King Philip III of Spain on a visit never fulfilled to this part of his kingdom, instead it initially housed the Viceroy Fernando Ruiz de Castro, count of Lemos. By 1616, the facade had been completed, and by 1620, the interior was frescoed by Battistello Caracciolo, Giovanni Balducci, and Belisario Corenzio. The decoration of the Royal Chapel of Assumption was not completed until 1644 by Antonio Picchiatti.
In 1734, with the arrival of Charles III of Spain to Naples, the palace became the royal residence of the Bourbons. On the occasion of his marriage to Maria Amalia of Saxony in 1738, Francesco De Mura and Domenico Antonio Vaccaro helped remodel the interior. Further modernization took place under Ferdinand I of the Two Sicilies. In 1768, on the occasion of his marriage to Maria Carolina of Austria, under the direction of Ferdinando Fuga, the great hall was rebuilt and the court theater added. During the second half of the 18th century, a 'new wing' was added, which in 1927 became the Vittorio Emanuele III National Library. By the 18th century, the royal residence was moved to Reggia of Caserta, as that inland town was more defensible from naval assault, as well as more distant from the often-rebellious populace of Naples.
During the Napoleonic occupation the palace was enriched by Joachim Murat and his wife, Caroline Bonaparte, with Neoclassic decorations and furnishings. However, a fire in 1837 damaged many rooms, and required restoration from 1838 to 1858 under the direction of Gaetano Genovese. Further additions of a Party Wing and a Belvedere were made in this period. At the corner of the palace with San Carlo Theatre, a new facade was created that obscured the viceroyal palace of Pedro de Toledo.
In 1922, it was decided to transfer here the contents of the National Library. The transfer of library collections was made by 1925.
The library suffered from bombing during World War II and the subsequent military occupation of the building caused serious damage. Today, the palace and adjacent grounds house the famous Teatro San Carlo, the smaller Teatrino di Corte (recently restored), the Biblioteca Nazionale Vittorio Emanuele III, a museum, and offices, including those of the regional tourist board.