San Petronio, Bologna

The Basilica of San Petronio is a minor basilica and church of the Archdiocese of Bologna located in Bologna, Emilia Romagna, northern Italy. It dominates Piazza Maggiore. The basilica is dedicated to the patron saint of the city, Saint Petronius, who was the bishop of Bologna in the fifth century. Construction began in 1390 and its main facade has remained unfinished since. The building was transferred from the city to the diocese in 1929; the basilica was finally consecrated in 1954. It has been the seat of the relics of Bologna's patron saint only since 2000; until then they were preserved in the Santo Stefano church of Bologna.

Basilica of Saint Petronius
Basilica di San Petronio
Religion
AffiliationRoman Catholic
ProvinceArchdiocese of Bologna
Ecclesiastical or organizational statusBasilica
StatusActive
Location
LocationBologna, Italy
Geographic coordinates44°29′34″N 11°20′37″E
Architecture
TypeChurch
StyleItalian Gothic

History

Construction
The Porta Magna with sculpture by Jacopo della Quercia

In 1388, the Consiglio Generale dei Seicento prepared the construction of the church as a civic temple.[1] To make room for the church, the adjacent Curia of Sancti Ambrosii was demolished, together with the majority of one of the city's burgs, including at least eight churches and towers. The first stone of construction was laid on 7 June 1390 under the supervision of architect Antonio di Vincenzo.[1] Works lasted for several centuries: after the completion of the first version of the facade, in 1393 the first pair of side chapels were begun. The series were completed only in 1479.

The third bay was built in 1441–1446. Its construction was delayed by the cardinal Baldassarre Cossa, who sold the construction material of the basilica and kept the money.[2]

San Petronio Basilica and Piazza Maggiore.

In 1514, Arduino degli Arriguzzi was chosen as the architect to construct the dome. His proposal included a large dome resting upon the width between the side aisles, which necessitated larger transepts and apses.[2] This led to a form of a Latin cross, which was said to outdo St. Peter's Basilica in Rome.[3] The project was considered too complicated, and after building the first two pillars and two triangular pylons for the dome, the work was halted.[2] According to legend, Pope Pius IV halted the "megalomaniac dream" and instead encouraged the construction of the Archiginnasio of Bologna.[3]

Architecture

Exterior

The basilica is a large church measuring 132 metres long, 66 metres wide, and 47 metres tall, and is described as the "most imposing" church in Bologna.[3] The façade was designed by Domenico da Varignana and started in 1538 by Giacomo Ranuzzi. However, it remains unfinished.[3]

The main doorway (Porta Magna) was decorated by Jacopo della Quercia of Siena with scenes from the Old Testament on the pillars, eighteen prophets on the archivolt, scenes from the New Testament on the architrave, and a Madonna and Child, Saint Ambrose and Saint Petronius on the tympanum. It is flanked by two side doors, with Alfonso Lombardi's Resurrection on the left and Amico Aspertini's Deposition on the right.[3]

The central nave covering and apse shooting were completed in 1663, designed by Girolamo Rainaldi and directed by Francesco Martini. The lower naves are enclosed by rectilinear walls. The first two windows were designed by Antonio with the assistance of Francesco di Simone, Domenico da Milano, Pagno di Lapo Portigiani and Antonio di Simone. The bell tower was designed by Giovanni da Brensa and built between 1481 and 1487.[3] In 2017, the proposal for completing the facade by Inter-Esse Studio was awarded the first place in the international competition of wall was held by CODE - Competitions for Designers and Con-fine Art.[4]

  • Details of the decoration of the main doorway by Jacopo della Quercia, photographed by Paolo Monti
  • Original sin
  • Fall of man
  • Noah's Ark
  • Binding of Isaac
  • Prophets on the archivolt
  • Massacre of the Innocents

Interior
The nave, with Vignola's ciborium

The interior houses a Madonna with Saints by Lorenzo Costa the Younger, and a Pietà by Amico Aspertini.

Main altar

The altar contains a 15th-century wooden crucifix. At the back, a fresco of the Madonna with St. Petronio by Marcantonio Franceschini and Luigi Quaini, cartoons by Cignani (1672). The ciborium of the main altar was built in 1547 by Jacopo Barozzi da Vignola.[3]

The fifteenth-century wooden choir was completed by Agostino de 'Marchi. The vaulting and decoration of the central nave is by Girolamo Rainaldi, who completed them in 1646-1658.

Side chapels

The nave contains twenty-two side chapels:

  1. Chapel of St. Abbondio, formerly of the Dieci di Balia - restored in neo-Gothic style in 1865. In this chapel, in the year 1530, Emperor Charles V was crowned by Pope Clement VII.
  2. Chapel of St. Petronio, once of the Cospi and Aldrovandi families, designed by Alfonso Torreggiani, designed to contain the relic of the head of San Petronio.
  3. Chapel of St. Ivo, Formerly of the family of San Brigida dei Foscherari: it has statues of Angelo Piò and the paintings of the Madonna of St. Luke and Saints Emidio and Ivo by Gaetano Gandolfi and Apparition of the Virgin to St. Francesca Romana by Alessandro Tiarini (1615). On the pillar, two clocks, one of the first made in Italy with the correction of the pendulum (1758).
  4. Chapel of the Magi, once of Bolognini family: its marble Gothic balustrade designed by Antonio di Vincenzo (1400); the Triptych wooden altar with twenty-seven figures carved and painted by Jacopo di Paolo. The walls were painted by Giovanni di Pietro Falloppi/Giovanni da Modena with a cycle depicting the Episodes in the life of San Petronio, the back wall, right wall, Stories of the Three Kings; the left wall, at the top,The Last Judgment with the Coronation of the Virgin in oval, and the controversial Heaven and Hell, Dante's depiction of the places, with a gigantic figure of Lucifer.
  5. Chapel of St. Sebastian, once of Vaselli family..
  6. Chapel of St. Vincent Ferrer, formerly of the Griffoni, and Cospi-Ranuzzi families: bronze monument of Cardinal Giacomo Lercaro made by Giacomo Manzù (1954).
  7. Chapel of St. James, formerly of the Rossi and Baciocchi families: the Madonna Enthroned on the altar was painted by Lorenzo Costa (1492), to the same author attributed the designs of the stained glass. Funeral monument containing the remains of Prince Felix Baciocchi and his wife Elisa Bonaparte (1845).
  8. Chapel of St. Rocco, formerly of the Ranuzzi family: it contains a Saint Roch with a Donor by Parmigianino (1527).
  9. Chapel of St. Michael formerly of the Barbazzi and Manzoli families: it houses a painting of Archangel Michael defeating the Fallen Angels by Denys Calvaert (1582).
  10. Chapel of St. Rosalie, formerly of the Sixteen of the Senate, now the Town Hall: canvas of Glory of Santa Barbara by Tiarini.
  11. Chapel of St. Bernardino stands before the fifteenth-century organ case by Lorenzo da Prato, the chapel was painted in 1531 by Aspertini with Four Stories of St. Petronius.
  12. Chapel of the Relics, formerly of Zambeccari family.
  13. Chapel of St. Peter Martyr, formerly the Society of Beccari, with marble railing by Francesco di Simone (late fifteenth century);
  14. Chapel of St. Anthony of Padua, formerly of Saraceni and Cospi families: the statue of St. Anthony of Padua attributed to Jacopo Sansovino.
  15. Chapel of the Blessed Sacrament, formerly of the Malvezzi Campeggi, rebuilt in the nineteenth.
  16. Chapel of the Immaculate, formerly of Fantuzzi family: art nouveau decorations by Achille Casanova.
  17. Chapel of St. Jerome, formerly of the Castelli: the St. Jerome altar attributed to Lorenzo Costa.
  18. Chapel of St. Lorenzo, formerly of the Garganelli, Ratta and Pallotti families: the Pieta was painted by Aspertini.
  19. Chapel of the Cross, formerly of the Notai: with devotional frescoes depicting Saints by Francesco Lola, Giovanni Pietro Falloppi and Pietro Lianori (XV). The window was made by Blessed Fra Giacomo di Ulm designed by Michele di Matteo da Bologna.
  20. Chapel of St. Ambrose, formerly of the Marsili, with a fresco in the style of Vivarini (mid-15th century).
  21. Chapel of St. Bridget, formerly of the Pepoli: polyptych by Tomas Garelli (1477).
  22. Chapel of Our Lady of Peace: Madonna in Istrian stone by Giovanni Ferabech (1394).

Music

Bologna was a principal centre of Baroque music in Italy. The musical organisation had been officially instituted by Pope Eugenius IV in 1436; the first regularly paid instrumentalists were added in the late sixteenth century, and in the seventeenth century San Petronio was renowned for its sacred instrumental and choral music, with its two great organs, completed in 1476 and 1596, both still in remarkably original condition; the library remains a rich archival repository. Three successive maestri di cappella marked the great age of music at San Petronio: Maurizio Cazzati (1657–71), Giovanni Paolo Colonna (1674–95) and Giacomo Antonio Perti (1696–1756).[5] The current maestro, since 1996, is the harpsichordist Sergio Vartolo who has revitalised the cappella with a series of recordings for Naxos, Tactus, Brilliant Classics and Bongiovanni.

Cassini's Meridian Line
The winter solstice end of the meridian line

The church hosts also a marking in the form of a meridian line inlaid in the paving of the left aisle in 1655; it was calculated and designed by the astronomer Giovanni Domenico Cassini, who was teaching astronomy at the University. A meridian line does not indicate the time: instead, with its length of 66.8 metres (219 ft) it is one of the largest astronomical instruments in the world, allowing measurements that were for the time uniquely precise. The sun light, entering through a 27.07 mm (1.066 in) hole placed at a 27.07 m (88.8 ft) height in the church wall, projects an elliptical image of the sun, which at local noon falls exactly on the meridian line and every day is different as to position and size. The position of the projected image along the line allows to determine accurately the daily altitude of the sun at noon, from which Cassini was able to calculate with unprecedented precision astronomical parameters such as the obliquity of the ecliptic, the duration of the tropical year and the timing of equinoxes and solstices. On the other hand, the size of the projected sun's image, and in particular its rate of variation during the year, allowed Cassini the first experimental verification of Kepler's laws of planetary motion.

Cassini and Domenico Guglielmini published an illustrated account of how the meridian line was accomplished in 1695.[6]

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See also

Notes
  1. "The Basilica's History". basilicadisanpetronio.org. Retrieved 2019-02-09.
  2. "The Fabbriceria". www.basilicadisanpetronio.org (in Italian). Retrieved 2019-02-09.
  3. "Basilica di San Petronio". bolognawelcome.com. 7 November 2018. Retrieved 9 February 2019.
  4. "The Wall. Vince la facciata attiva degli Inter-Esse". professione Architetto. January 4, 2018.
  5. Anne Schnoebelen, "Performance Practices at San Petronio in the Baroque" Acta Musicologica 41.1/2 (January 1969), pp. 37-55; see also Eugene Enrico, The Orchestra at San Petronio in the Baroque Era (Washington: Smithsonian Studies) 1976.
  6. Recently, the book was edited by Giordano Berti and Giovanni Paltrinieri, La Meridiana del Tempio di S. Petronio in Bologna, Arnaldo Forni Editore, S. Giovanni in Persiceto, 2000. Paltrinieri is also the author of a booklet that summarises the work of Cassini and Guglielmini; La meridiana di San Petronio Archived 2007-01-31 at the Wayback Machine

Sources
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