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Siena Cathedral
Metropolitan Cathedral of Saint Mary of the Assumption
Duomo di Siena (Italian)
Cattedrale Metropolitana di Santa Maria Assunta (Italian)
Siena Cathedral
43°19′04″N 11°19′44″E / 43.3177°N 11.3290°E / 43.3177; 11.3290
Location	Siena, Tuscany
Country	Italy
Denomination	Catholic
Tradition	Roman Rite
Website	operaduomo.siena.it
History
Status	Cathedral
Consecrated	1215
Architecture
Architect(s)	Giovanni di Agostino Giovanni Pisano Camaino di Crescentino
Architectural type	Church
Style	Italian Gothic, Romanesque, Classical
Groundbreaking	1196
Completed	1348
Specifications
Length	89.4 metres (293 ft)
Height	77 metres (253 ft)
Administration
Archdiocese	Archdiocese of Siena-Colle di Val d'Elsa-Montalcino
Clergy
Archbishop	Antonio Buoncristiani
Provost	Roberto Pialli
Archdeacon	Giovanni Soldani
UNESCO World Heritage Site
Official name	Historic Centre of Siena
Type	Cultural
Criteria	i, ii, iv
Designated	1995 (19th session)
Reference no.	717
Region	Europe and North America

Siena Cathedral (Italian: Duomo di Siena) is a medieval church in Siena, Italy, dedicated from its earliest days as a Roman Catholic Marian church, and now dedicated to the Assumption of Mary.

Since the earth 13th-century the Siena Cathedral has been an important part of the Sienese identity. One way to see this is the continuous building projects constantly surrounding the cathedral from its earliest days, aiming at reinforcing and expanding this impressive site. Indeed, it was the community of citizens that continually advocated for the cathedral to become one of the largest churches in Europe. For centuries the Cathedral acted as more than just a place of worship - it was the center of the city and a place to express civic pride.

The cathedral was designed and completed between 1215 and 1263 on the site of an earlier structure. It has the form of a Latin cross with a slightly projecting transept, a dome and a bell tower. The dome rises from a hexagonal base with supporting columns. The dome was completed in 1264. The lantern atop the dome was added by Gian Lorenzo Bernini. The bell tower has six bells, where the oldest one was cast in 1149. The nave is separated from the two aisles by semicircular arches. The exterior and interior are constructed of white and greenish-black marble in alternating stripes, with the addition of red marble on the façade. Black and white are the symbolic colors of Siena, etiologically linked to black and white horses of the legendary city's founders, Senius and Aschius. The finest Italian artists of that era completed works in the cathedral. These artists were Nicola and Giovanni Pisano, Donatello, Pinturicchio, Lorenzo Ghiberti, and Bernini.

It was the episcopal seat of the Diocese of Siena, and from the 15th century that of the Archdiocese of Siena. It is now the seat of the Archdiocese of Siena-Colle di Val d'Elsa-Montalcino.

Early history

The origins of the first structure are shrouded in legend. There was a 9th-century church with the bishop's palace at the present location. In December 1058 a synod was held in this church resulting in the election of pope Nicholas II and the deposition of the antipope Benedict X. There is a common myth that the cathedral was consecrated on November 18, 1179, but there is little evidence to support this idea. There is evidence that the concentration ceremony occurred on November 18, according to the Ordo Officiorum Ecclesiae senensis, but without reference to a specific year.

In 1196, the cathedral masons’ guild, the Opera di Santa Maria, was put in charge of the construction of a new cathedral. Works were started with the north–south transept and it was planned to add the main, larger body of the cathedral later, but this enlargement was never accomplished.

By 1215 there were already daily masses said in the new church. Beginning in 1226, city records show that black and white marble blocks were being transported to the cathedral, presumably to be used for the facade and bell tower. These records also note the payment of stone masons to work with the marble blocks. The vaults and the transept were constructed in 1259–1260 at the order of the committee composed of city citizens. In 1259 Manuello di Ranieri and his son Parri carved the wooden choir stalls, which were replaced about 100 years later and have now disappeared. In 1264, Rosso Padellaio helped create the copper sphere on top of the dome. The pulpit, one of the few original works to survive today, was made between 1265-1268 by Nicola Pisano and his followers. This group was most likely also responsible for carving the main altar. The Opera di Santa Maria ordered stained glass for a large, round window in 1287.

A second massive addition of the main body of the cathedral was planned in 1339. It would have more than doubled the size of the structure by means of an entirely new nave and two aisles ranged perpendicular to the existing nave and centered on the high altar. The majority of construction was under the direction of Giovanni di Agostino, a well-known sculptor of the time. Construction was halted by the Black Death in 1348. Unfortunately, the halt in construction revealed the failures already present in the new structure, such as a shallow foundation and weak building materials. The project was abandoned officially in 1355, and the work never resumed. The outer walls, remains of this extension, can now be seen to the south of the Duomo, while the floors of the uncompleted nave now serve as a parking lot and museum. Though unfinished, the remains are a testament to Sienese power, ambition, and artistic achievement. One of the walls can be climbed by narrow stairs for a high view of the city. The bell tower is one of the only modern aspects dated before 1215, built between the nave and south transept.

Façade

The façade of Siena Cathedral is one of the most fascinating in all of Italy and certainly one of the most impressive features in Siena. Each of the cardinal points (west, east, north, and south) has its own distinct work; by far the most impressive of these is the west façade. Acting as the main entryway to the Duomo proper, it boasts three portals (see Portal (architecture)); the central one is capped by a bronze-work sun.

Built in two stages and combining elements of French Gothic, Tuscan Romanesque architecture, and Classical architecture, the west façade is a beautiful example of Sienese workmanship.

Work began on the lower part around 1284. Built using polychrome marble, the work was overseen by Giovanni Pisano whose work on the Duomo's façade and the pulpit was influenced by his father Nicola Pisano. Built in Tuscan Romanesque style it emphasizes a horizontal unity of the area around the portals at the expense of the vertical bay divisions. The three portals, surmounted by lunettes, are based on Giovanni Pisano's original designs, as are much of the sculpture and orientation surrounding the entrances. The areas around and above the doors, as well as the columns between the portals, are richly decorated with acanthus scrolls, allegorical figures and biblical scenes.The figures above the portals, many of whom were Old Testament prophets, were carved exaggerated poses and features, to enable them to be seen from far away.

Giovanni Pisano was able to oversee his work until about 1296 when he abruptly left Siena, reportedly over creative differences with the Opera del Duomo, the group that oversaw the construction and maintenance of the Siena cathedrals. Pisano's work on the lower façade was continued under the direction of Camaino di Crescentino, but a number of changes were made to the original plan. These included raising the façade due to the raising of the nave of the church and the installation of a larger rose window based on designs by Duccio di Buoninsegna and commissioned by the city of Siena. Work on the west façade came to an abrupt end in 1317 when the Opera del Duomo redirected all efforts to the east façade.

There is debate as to when work on the upper façade was completed. Most scholars agree that it was finished sometime between 1360 and 1370, though when it began again is not known. The work continued to use Pisano's plans for the façade with some adaptations under the direction of Giovanni di Cecco. Di Cecco preferred more elaborate designs, most likely inspired by the Orvieto Cathedral. The façade needed to be much higher than foreseen as the nave had, once again, been raised.

The changes were probably needed to accommodate the raised nave and di Cecco's more elaborate design scheme, heavily influenced by French Gothic architecture, which caused the apparent division of the upper portion of the cathedral. Most noticeably the pinnacles of the upper portion do not continue from the columns flanking the central portal as they normally would in such cathedrals. Instead, they are substantially offset, resulting in a vertical discontinuity which is uncommon in cathedrals of the time as it can lead to structural weakness. To adjust for this imbalance, the towers on each side of the cathedral were opened by adding windows, reducing the weight they needed to support. The upper portion also features heavy Gothic decoration, a marked contrast to the simple geometric designed common to Tuscan Romanesque architecture.

While most of the sculpture decorating the lower level of the lavish façade was sculpted by Giovanni Pisano and assistant depicting prophets, philosophers and apostles, the more Gothic statuary adorning the upper portion—including the half-length statues of the patriarchs in the niches around the rose window—are works of later, unattributed, sculptors. Almost all the statuary adorning the cathedral today are copies. The originals are kept in the Crypt of the Statues in the Museo dell'Opera del Duomo.

Three large mosaics on the gables of the façade were made in Venice in 1878. The large central mosaic, the Coronation of the Virgin, is the work of Luigi Mussini. The smaller mosaics on each side, Nativity of Jesus and Presentation of Mary in the Temple, were made by Alessandro Franchi.

The bronze central door is a recent addition to the cathedral, replacing the original wooden one. The large door, known as the Porta della Riconoscenza, was commissioned in 1946 near the end of the German occupation of Siena. Sculpted by Vico Consorti and cast by Enrico Manfrini, the scenes on the door represent the Glorification of the Virgin, Siena's patron saint.

On the left corner pier of the façade is a 14th-century inscription marking the grave of Giovanni Pisano. Next to the façade stands a column with a statue of the Contrade Lupa, a wolf breast-feeding Romulus and Remus. According to local legend Senius and Aschius, sons of Remus and founders of Siena, left Rome with the statue, stolen from the Temple of Apollo in Rome.

Interior

In the interior the pictorial effect of the black and white marble stripes on the walls and columns strikes the eye. Black and white are the colours of the civic coat of arms of Siena. The capitals of the columns in the west bays of the nave are sculpted with allegorical busts and animals. The horizontal molding around the nave and the presbytery contains 172 plaster busts of popes dating from the 15th and 16th centuries starting with St. Peter and ending with Lucius III. The spandrels of the round arches below this cornice exhibit the busts of 36 emperors. The vaulted roof is decorated in blue with golden stars, replacing frescoes on the ceiling, while the formerets (half ribs) and the tiercerons (secondary ribs) are adorned with richly elaborated motifs.

The stained-glass round window in the choir was made in 1288 to the designs of Duccio. Divided into registers, the window depicts the Assumption of the Virgin. It is one of the earliest remaining examples of Italian stained glass. in 1308-1311 Duccio created a magnificent double sided altarpiece, the Maestá, which illustrated the Madonna Enthroned. Situated directly beneath the Assumption of Mary stained glass, these two works presented a unified visual theme that emphasized the Virgin Mary, to whom the Cathedral is dedicated.

The hexagonal dome is topped with Bernini's gilded lantern, like a golden sun. The trompe-l'œil coffers were painted in blue with golden stars in the late 15th century. The colonnade in the drum is adorned with images and statues of 42 patriarchs and prophets, painted in 1481 by Guidoccio Cozzarelli and Benvenuto di Giovanni. The eight stucco statues in the spandrels beneath the dome were sculpted in 1490 by Ventura di Giuliano and Bastiano di Francesco. Originally they were polychromed, but later, in 1704, gilded.

Next to the first two pillars, there are two fonts, carved by Antonio Federighi in 1462–1463. His basin for the Blessing of Holy Water was later transferred to the chapel of San Giovanni.

The marble high altar of the presbytery was built in 1532 by Baldassarre Peruzzi. The enormous bronze ciborium is the work of Vecchietta (1467–1472, originally commissioned for the church of the Hospital of Santa Maria della Scala, across the square, and brought to the cathedral in 1506). At the sides of the high altar, the uppermost angels are masterpieces by Francesco di Giorgio Martini (1439–1502).

Against the pillars of the presbytery, there are eight candelabras in the form of angels by Domenico Beccafumi (1548–1550), He also painted the frescoes, representing Saints and Paradise, on the walls in the apse. These were partially repainted in 1912. Behind the main altar is a very large painting Assumption of the Virgin by Bartolomeo Cesi in 1594. The presbytery keeps also the beautiful wooden choir stalls, made between 1363–1397 and extended in the 16th century. Originally there were more than ninety choir stalls, arranged in double rows. The remaining 36 stalls are each crowned by the bust of a saint in a pointed niche. Their backs are decorated with carved panels, the work of Fra’ Giovanni da Verona in 1503.

Pulpit

The pulpit is made of Carrara marble and was sculpted between the end of 1265 and November 1268 by Nicola Pisano and several other artists. This pulpit expresses the northern Gothic style adopted by Pisano, while still showing his classical influences. The whole message of the pulpit is concerned with the doctrine of Salvation and the Last Judgment. In the top level, seven scenes narrate the Life of Christ. The many figures in each scene with their chiaroscuro effect, show a richness of surface, motion, and narrative. On the middle-level statuettes of the Evangelists and Prophets announce the salvation of mankind. The pulpit itself is the earliest remaining work in the cathedral. The staircase dates from 1543 and was built by Bartolomeo Neroni. At the same time, the pulpit was moved from the choir to its present location.

The Marble Floor

The inlaid marble mosaic floor is one of the most ornate of its kind in Italy, covering the whole floor of the cathedral. Visitors have been amazed by the stunning effect of these floors for centuries. Indeed, Giorgio Vasari, an Italian Renaissance painter and architect, claimed the floor was “the most beautiful … great and magnificent pavement ever made.” This undertaking went on from the 14th to the 16th centuries, and about forty artists made their contribution, the majority of whom were Sienese. The floor consists of 56 panels in different sizes. Most have a rectangular shape, but the later ones in the transept are hexagons or rhombuses. They represent the sibyls, scenes from the Old Testament, allegories, virtues, and figures from the ancient world. Most are still in their original state. The earliest scenes were made by a graffito technique: drilling tiny holes and scratching lines in the marble and filling these with bitumen or mineral pitch. In a later stage black, white, green, red, and blue marble intarsia were used. This technique of marble inlay also evolved during the years, finally resulting in a vigorous contrast of light and dark, giving it an almost modern, impressionistic composition.

The uncovered floor can only be seen for a period of six to ten weeks each year, generally including the month of September. The rest of the year, the pavements near the altar are covered, and only some near the entrance may be viewed.

Nave and Aisles

Nave

The nave, or central part of the church, contains scenes from classical antiquity. It is unusual to see figures from pagan and classical antiquity in a church from this time period. These additions were primarily included from the influence of two Sienese popes, Enea Silvio Piccolomini and Francesco Tedeschini Piccolomini, who believed that classical authors and figures held knowledge that is applicable across faith traditions.

At the entrance of the nave is a scene containing Hermes Trismegistus, a popular figure of the fifteenth century who was seen as the ‘founder of human wisdom.’ Designed by Giovanni di Stefano in 1488, this panel welcomes visitors into the church and introduces the theme of knowledge that develops throughout the nave and side aisles.

The She-Wolf Suckling Romulus and Remus, or The She Wolf of Siena was originally created in the 1360’s but heavily restored by Leopoldo Maccari in 1865. It portrays a wolf in the center surrounded by eight smaller circles, each depicting the emblem of major Italian cities.

Allegory of the Mount of Wisdom was designed by Pinturicchio in 1505 and completed in 1506 by Paolo Mannuci. This complicated scene includes a feminine personification of Fortune who is leading a group of wise men up a rocky, dangerous path to great the female personification of Wisdom.

The final panel in the nave is Wheel of Fortune (completed in 1372 and restored in 1864 by Leopoldo Maccari). The central image is of a wheel, where a king sits at the top and three male figures cling to the wheel. Surrounding the wheel are four figures depicting philosophers from the ancient world.

Side Aisles

The side aisles along the nave are decorated with ten panels (five in each aisle) of the Sibyls. Each panel contains a Sibyl that is an allegorical representation of the known world of the time, as identified by an accompanying inscription: Persian Sibyl, Hellespontine Sibyl, Eritrean Sibyl, Phrygian Sibyl, Samian Sibyl, Delphic Sibyl, Libyan Sibyl, Cimmerian Sibyl, Cumaen Sibyl, and Tiburtine Sibyl. The effect of these allegorical figures represent the universality of the Christian message. Each full-length Sibyl is contrasted against a black and red background, and illustrated in a variety of poses with flowing robes.

Transepts and Chancel

The scenes in the transepts and chancel represent biblical stories and mark the thematic transition from the scenes in the naves and aisles, which depicted figures from classical antiquity. The biblical scenes all focus on the theme of humanity’s salvation.

(In a church shaped like a cross, transepts are ‘arm’ shapes of the cross, and the chancel is the center of the church, where the transepts and nave meet. In the Siena Cathedral, the chancel encompasses the area below the dome and in front of the altar.)

Left Transept

The left transept contains three large panels: The Expulsion of Herod, The Slaughter of the Innocents, and The Story of Judith.

The Expulsion of Herod by Benvenuto di Giovanni (1484-1485) in an incredibly intricate scene representing God’s revenge against Herod, the persecutor of John the Baptist.

The Slaughter of the Innocents by Matteo di Giovanni is one of the most awe-inspiring panels of the cathedral, and has evoked emotional responses from visitors since its creation in 1481. The panel articulates the desperation of the mothers who are trying to save their babies from the slaughter of malicious guards. This is the only scene from the New Testament.

The Story of Judith by Francesco di Giorgio Martini (1473), located near the pulpit, depicts the Old Testament narrative of Judith beheading Holofernes, an enemy general.

Chancel

The majority of the panels in the chancel are grouped together in a large hexagonal portion of the pavement and depict Scenes from the Lives of Elijah and Ahab. Each of these scenes are either designed within a hexagonal panel or smaller rhombus-shaped panel. The upper half of these scenes (four of the seven hexagons and two of the six rhombuses) were completed from 1519-1524 by Domenico Beccafumi, who was the most renowned Sienese artist of his time. He worked on cartoons for the floor for thirty years (1518–1547) and made vast contributions to the cathedral’s pavement. The lower portion wasn’t completed until 1878 by Alessandro Franchi.

Beccafumi’s eight-meter long frieze Moses Striking water from the Rock was completed in 1525. This panel marks a technical and stylistic shift from Beccafumi’s earlier work. Here, the artist used different tones within the same piece of marble to create figures heavily contrasted by light and shadow.

The subsequent section, also by Beccafumi, portrays Scenes from the Life of Moses on Mount Sinai. The large panel, completed from 1525-1529, is a continuation of the previous story and employs a similar technical and stylistic method. Rather than isolating each scene within a panel, the entire panel merges the scenes together in one combined section.

Next are five panels arranged horizontally: Joshua Defeats the Five Kings of the Amorites, David the Psalmist between David the Slingsman and Goliath Falling Backwards, and Samson Chastising the Philistines. The scenes portraying David are credited to Domenico di Niccolò dei Cori (1413-1423), the first known artist to work work on the panels. His successor, Paolo di Martino, completed Joshua Defeats the Five Kings of the Amorites and Samson Chastising the Philistines between 1424 and 1426 which contain more details than the previous panels.

The final panel in the chancel, located directly in front of the altar, is Abraham’s Sacrifice, or Sacrifice of Isaac. Completed in 1547 by Beccafumi, the scene contains one large panel of Abraham's sacrifice of Issac, surrounded by smaller rectangular panels of related scenes.

Bordering the main altar is a geometric pattern containing five circular panels which depict Mercy and The Four Cardinal Virtues (Fortitude, Justice, Prudence, and Good Government). The panels date from 1406, as established by a payment made to Marchese d'Adamo and his fellow workers who executed the cartoons of Sienese painters.

Right Transept

The right transept contains five sections of panels: The Seven Ages of Man, Religion and the Theological Virtues, The Story of Jephthah, The Death of Absalom, and Emperor Sigismund.

The Seven Ages of Man is a collection of six octagonal panels surrounding a central rectangular panel and woven together by a geometric rope-inspired pattern. They depict the stages of life a man goes through, from infancy to death. The majority of the original work by Antonio Federighi in 1457 was reconstructed in 1871.

Religion and the Theological Virtues is a set of panels, depicting an allegory of religion and three personifications of theological virtues (Hope, Faith, and Charity). The original works from 1780 were replaced a century later by designs by Alessandro Franchi.

The Story of Jephthah is credited to Francesco di Giorgio Martini, and notably contains sixty characters throughout the panel. The finer details of the narrative have been lost over time.

The Death of Absalom by Pietro di Tommaso del Minella (1447) narrates a group of soldiers finding King David’s sin, Absalom, hanging dead from a tree. The figures are contrasted by a foreground of red marble, and a background of black marble.

In 1434 the renowned painter Domenico di Bartolo completed the panel Emperor Sigismund Enthroned. The Holy Roman Emperor Sigismund was popular in Siena, because he resided there for ten months on his way to Rome for his coronation. Today, the details are incredibly faded.

Works of art

The cathedral's valuable pieces of art including The Feast of Herod by Donatello, and works by Bernini and the young Michelangelo make it an extraordinary museum of Italian sculpture. The Annunciation between St. Ansanus and St. Margaret, a masterwork of Gothic painting by Simone Martini and Lippo Memmi, decorated a side altar of the church until 1799, when it was moved to the Uffizi of Florence.

The funeral monument for cardinal Riccardo Petroni (Siena 1250 - Genoa 1314, a jurisconsult of Pope Boniface VIII) was erected between 1317 and 1318 by the Sienese sculptor Tino di Camaino. He had succeeded his father as the master-builder of the Siena cathedral. The marble monument in the left transept is the earliest example of 14th-century funeral architecture. It is composed of a richly decorated sarcophagus, held aloft on the shoulders of four statues. Above the sarcophagus, two angels draw apart a curtain, revealing the cardinal lying on his deathbed, accompanied by two guardian angels. The monument is crowned by a spired tabernacle with statues of the Madonna and Child, Saint Peter and Saint Paul.

In the pavement, in front of this monument, lies the bronze tombstone of Bishop Giovanni di Bartolomeo Pecci, bishop of Grosseto, made by Donatello in 1427. It shows the dead prelate laid out in a concave bier in highly illusionistic low relief. Looking at it obliquely from the end of the tomb, gives the impression of a three-dimensionality. It was originally located in front of the high altar and moved to the present location in 1506.

The wall tomb of bishop Tommaso Piccolomini del Testa is set above the small door leading to the bell tower. It is the work of the Sienese painter and sculptor Neroccio di Bartolomeo de' Landi in 1483.

The Piccolomini Altarpiece, left of the entrance to the library, is the work of the Lombard sculptor Andrea Bregno in 1483. This altarpiece is remarkable because of the four sculptures in the lower niches, made by the young Michelangelo between 1501 and 1504: Saint Peter, Saint Paul, Saint Gregory (with the help of an assistant) and Saint Pius. On top of the altar is the Madonna and Child, a sculpture (probably) by Jacopo della Quercia.

Many of the Duomo's furnishings, reliquaries, and artwork, have been removed to the adjacent Museo dell'Opera del Duomo. This includes Duccio's Maestà altarpiece, some panels of which are scattered around the world or lost. Duccio's large stained glass window, original to the building, was removed out of precaution during WWII for fear of shattering from bombs or fire. A replica has been installed in the Duomo ever since. The glass depicts a typical Sienese religious subject- three panels of the death, Assumption, and Coronation of Mary, flanked by the city's most important patron saints, Saint Ansanus; Saint Sabinus; Saint Crescentius; and Saint Victor, and in four corners are the Four Evangelists.

Chapel of Saint John the Baptist

The Chapel of Saint John the Baptist is situated in the left transept. At the back of this chapel, amidst the rich renaissance decorations, is the bronze statue of St. John the Baptist by Donatello. In the middle of the chapel is a 15th-century a marnle font. But most impressive in this chapel are the eight frescoes by Pinturicchio, which were commissioned by Alberto Aringhieri and painted between 1504 and 1505. Two of the frescoes were repainted in the 17th century, while a third was completely replaced in 1868. The original paintings in the chapel are: Nativity of John the Baptist, John the Baptist in the desert and John the Baptist preaching. He also painted two portraits: Aringhieri with the cloak of the Order of the Knights of Malta and Kneeling Knight in Armour. These two portraits show us a very detailed background.

The Chigi Chapel

The small Chigi Chapel (or Cappella della Madonna del Voto) is situated in the right transept. It is the last, most luxurious sculptural addition to the Duomo, and was commissioned in 1659 by the Sienese Chigi pope Alexander VII. This circular chapel with a gilded dome was built by the German architect Johann Paul Schor to the baroque designs of Gian Lorenzo Bernini, replacing a 15th-century chapel. At the back of the chapel is the Madonna del Voto (by a follower of Guido da Siena, 13th century), that even today is much venerated and receives each year the homages of the contrade. On the eve of the battle of Montaperti (4 September 1260) against Florence, the city of Siena had dedicated itself to the Madonna. The victory of the Sienese, against all odds, over the much more numerous Florentines was ascribed to her miraculous protection.

Two of the four marble sculptures in the niches, are by Bernini himself: Saint Jerome and Mary Magdalene. The other two are Saint Bernardine (Antonio Raggi) and Saint Catherine of Siena (Ercole Ferrata). The eight marble columns are originally from the Lateran Palace in Rome. The bronze gate at the entrance is by Giovanni Artusi.

Piccolomini Library

The library was commissioned by cardinal Francesco Todeschini Piccolomini (then archbishop of Siena and the future pope Pius III) in 1492. It was intended as a repository of the books and the manuscript collection of his uncle cardinal Enea Silvio Piccolomini, eventually Pope Pius II. This collection included works by his uncle, books in Greek, Latin, and Hebrew, and many rare parchments. Today, many of the original collection has been lost, but the library still houses many exquistete illuminated Psalters ‘by Liberale da Verona and Girolamo da Cremona were executed between 1466 and 1478 and later carried on by other Sienese illuminators’.

Adjoined to the left-side of the cathedral, the entrance is set apart by a large marble wall monument, with two grand arches. This marble entrance was constructed by Lorenzo di Mariano in 1497. It contains a round relief of St. John the Evangelist (probably) by Giovanni di Stefano and, below the altar, a polychrome Pietà by the sculptor Alberto di Betto da Assisi in 1421. Above this marble monument is a fresco of the Papal Coronation of Pius III by Pinturicchio in 1504.

Entering the room, there is an unmistakable stylistic shift within the library, compared to the rest of the cathedral; whereas the cathedral is more somber and dark, the library is filled with light and bright colors. Much of the color comes from the many frescos that cover the entirety of the walls and ceilings.

The walls are covered with frescoes depicting the ten most important scenes from the life of Pope Pius II, to whom the library is dedicated. Pinturicchio painted this cycle of frescoes around the library between 1502 and 1507, representing Raphael and himself in several of them. There is some controversy whether these frescos were based, at least partially, on designs by Raphael. This masterpiece is full of striking detail and vivacious colours. Each scene is explained in Latin by the text below, and demonstrate the remarkable events from the secular and religious career of pope Pius II, first as a high prelate, then bishop, a cardinal and ultimately pope:

1. Enea Silvio Piccolomini (ESP) leaves for the Council of Basel. The storm scene in the background is a first in western art.

1. ESP, ambassador at the Scottish Court
2. ESP crowned court poet by emperor Frederick III
3. ESP makes an act of submission to Pope Eugene IV
4. ESP, bishop of Siena, presents emperor Frederick III with his bride-to-be Eleanora of Portugal at the Porta Camollia in Siena.
5. ESP receives the cardinal's hat in 1456
6. ESP, enters the Lateran as pontiff in 1458
7. Pius II convokes a Diet of Princes at Mantua to proclaim a new crusade in 1459
8. Pius II canonizes Saint Catherine of Siena in 1461
9. Pius II arrives in Ancona to launch the crusade.

The ceiling is decorated in four panels, which each contain mythological subjects and are boarded by colorful, geometric patterns. They were executed between 1502 and 1503 by Pinturicchio and his assistants. The floor, made of blue ceramics with crescent moons, adds another element of color to the room. In the center of the room is a marble statue of three smiling women with entwined arms, who are personifications of the three graces. Originally a Greek painting, the famous statue Three Graces is a Roman copy that was bought specifically to be placed in the library.

Baptistry

Unlike Florence or Pisa, Siena did not build a separate baptistry. The baptistry is located underneath the eastern bays of the choir of the Duomo. The construction of the interior was largely performed under Camaino di Crescentino and was completed about 1325. The main attraction is the hexagonal baptismal font, containing sculptures by Donatello, Jacopo della Quercia and others.

Crypt

Located under the Duomo near the baptistry, and rediscovered in 1999 during an excavation, is the cathedral's crypt. Although scholars prior to 1999 believed there was a crypt, as recorded in medieval sources, they did know know to what extent this room was preserved. There is evidence that the room was filled with dirt and other material waste in the beginning of the 15th century, with more deposits added in the first half of the 18th century. The room was decorated towards the end of the 13th century by a series of frescos, which survive today in vivid color. These frescos, covering each wall as well as the two pillars supporting the room, depict forty-five scenes from the Old and New Testaments. These scenes are bordered by geometric patterns and other embellishments.

See also

• History of medieval Arabic and Western European domes
• List of Gothic Cathedrals in Europe
• Roman Catholic Marian churches

Gallery

• Siena Cathedral
• Façade, bell tower, and column
• Siena Cathedral
• Stained-glass window depicting the Last Supper
• Stained-glass window above altar depicting the life of Mary
• High altar
• Siena Cathedral interior
• Siena Cathedral interior
• Floor panel, Hermes Trismegistus
• inlaid details of Hermes Trismegistus
• Frescos, scenes 5 and 6
• Frescos, scenes 7-10 and the Three Graces
• Piccolomini Library
• The interior of Duomo
• Dome
• Interior of the dome

Notes

1. ^ Ploeg, Kees van der (1993). Art, Architecture and Liturgy: Siena Cathedral in the Middle Ages. Vol. 12. Egbert Forsten, Groningen. ISBN 90-6980-063-2.
2. ^ Carli, Enzo – Siena Cathedral and the cathedral museum; Scala publications 1999
3. "Siena Cathedral of Santa Maria". Wondermondo. 29 September 2012.
4. Tragbar, Klaus. (2015). Constructing a Cathedral. Notes on the Construction Management of Siena Cathedral. Fifth International Construction History congress, Chicago, Illinois, United States of America. https://gesellschaft.bautechnikgeschichte.org/wp-content/uploads/2015/07/tragbar.pdf
5. ^ Paoletti, John T.; Radke, Gary M. (2005). Art in Renaissance Italy. Laurence King Publishing. pp. 100–112. ISBN 978-1-85669-439-1.
6. Sciences, F. F. (2004). The City: building reputations (motion picture).
7. Gillerman, D. M. (1999). "Cosmopolitanism and Campanilismo: Gothic and Romanesque in the Siena Duomo Facade." The Art Bulletin, Vol. 81, No. 3, 437–455.
8. Houton, K. (2010). Eucharistic and Baptismal Allusions in Late Medieval Italian Images of the Massacre of Innocents. Southeastern College Art Conference Review, 2010, Vol. 15 Issue 5, 536–542.
9. Gillerman, D. M. (1999). "Cosmopolitanism and Campanilismo: Gothic and Romanesque in the Siena Duomo Facade." The Art Bulletin, Vol. 81, No. 3, 437–455.
10. sacred-destinations.com. (2008). Siena Duomo (Siena Cathedral). Retrieved April 28, 2012, from sacred destinations http://www.sacred-destinations.com/italy/siena-duomo
11. Parsons, G. (2001). "O Maria, la tua siena difendi": the Porta della riconscenza of Siena Cathedral. Zeitschrift fur Kunstgeschichte, 153–176.
12. Dillon, Sarah H. (2018). Seeing Renaissance Glass: Art, Optics, and Glass of Early Modern Italy, 1250–1425. New York: Peter Lang.
13. Liu, Y.; Toussaint, G.T. (2011). "The marble frieze patterns of the cathedral of Siena: geometric structure, multi-stable perception and types of repetition". Journal of Mathematics and the Arts. 5 (3): 115–127. doi:10.1080/17513472.2011.551933.
14. ^ Caciorgna, Marilena (2022). Siena: The Pavement of the Cathedral. Sillabe. ISBN 978-88-3340-299-4.
15. The 2007 dates (August 18 to October 27) are given by the Comune of Siena Archived 2007-09-27 at the Wayback Machine and Agriturismo Siena.
16. ^ Doig, Allan (2008). Liturgy and Architecture: From the Early Church to the Middle Ages. London: Routledge.
17. Johnson, Geraldine A. (September 1995). "Activating the effigy: Donatello's Pecci tomb in Siena Cathedral". The Art Bulletin. 77 (3): 445–459. doi:10.2307/3046120. JSTOR 3046120.
18. ^ Misciatelli, Piero (1926). The Piccolomini Library in the Cathedral of Siena. Translated by Hunter, Lilian E. Italy: Libreria Editrice Senese.
19. ^ Castiglia, Gabriele (2014). Il Duomo di Siena: Excavations and Pottery below the Siena Cathedral. Archaeopress.
20. Guasparri, G. (2006). "Thirteenth century wall paintings under the Siena Cathedral (Italy). Mineralogical and petrographic study of materials, painting techniques and state of conservation". Journal of Cultural Heritage. 7 (3): 171–185. doi:10.1016/j.culher.2006.04.002.

External links

• Official website
• Slides of Siena Cathedral by Branson DeCou from the UC Santa Cruz Library Digital Collections
• The Gargoyles of the Duomo

v t e Siena
Religious	Cathedral Siena Cathedral Cathedral Pulpit Basilica San Domenico Osservanza San Francesco Santa Maria dei Servi Churches Battistero di San Giovanni Oratorio di Sant'Antonio Sant'Agostino San Martino San Pellegrino alla Sapienza San Pietro alla Magione San Pietro alle Scale San Raimondo San Sebastiano in Vallepiatta Santo Spirito Santo Stefano alla Lizza
Other	Fonte Gaia Fortezza Medicea Bottini of Siena
Palaces or Palazzi	Chigi-Saracini del Magnifico Pubblico Salimbeni
Museums	Pinacoteca Nazionale Santa Maria della Scala
Gardens or public squares	Orto Botanico Piazza del Campo
Events and traditions	Contrade of Siena Corteo Storico Palio di Siena March of the Palio

• Buildings and structures completed in 1215
• Churches completed in the 1210s
• 13th-century Roman Catholic church buildings in Italy
• Roman Catholic churches in Siena
• Roman Catholic cathedrals in Italy
• Gothic architecture in Siena
• Unfinished cathedrals
• Church buildings with domes
• 13th-century establishments in the Republic of Siena
• Cathedrals in Tuscany