In 1015, the church was in poor condition. Bishop Peter Roger, son of Count Roger I of Carcassonne, restored it with the money obtained by selling the church of the St. Daniel to his brother-in-law, Count Ramon Borrell of Barcelona. The church and its cloister were built until 1064, in Romanesque style. The bell tower was completed in 1117.
Gothic cathedral
The complex was redesigned by Pere Sacoma in 1312. After some years of indecisiveness, Guillem Bofill and Antoni Canet started the project in 1416. The new design consisted of a large Gothic nave, the widest Gothic nave in the world—22.98 m—and the second-widest nave of all styles after St. Peter's Basilica in Rome. The elevation in the vault is.
Exterior
The church has a Baroque main façade, preceded by a large staircase completed in 1607. The sculptures decorating the three orders of the façade were executed by local sculptors in the 1960s. Other exterior features include the Gothic portal of St. Michael, on the northern façade, and the southern portico of the Apostles, from the 14th century. The latter originally featured sculptures of the Twelve Apostles, executed by Antoni Claperós in the 1460s, which have mostly been lost, aside from two depicting St. Peter and St. Paul, now in the church's chapter house. The church has two bell towers. The oldest one, named after Charlemagne, is the surviving one of the two originally flanking the first Romanesque church. Begun in the early 11th century, it has a square plan with six levels separated by friezes with Lombard bands and double mullioned windows. The new bell tower started in 1590 and completed in the 18th century, has an octagonal plan. It houses six bells, the oldest one dating to 1574.
Interior
The interior's single nave is surmounted by cross vaults, supported by Gothic buttresses. The side walls feature a triforium with pointed-arch stained glass windows. The apse is separated from the nave by a wall reaching to the vaulted ceiling and perforated with openings, namely one enormous ogive or pointed arch in the center framing the high altar, flanked by two smaller pointed arches as entrances to the ambulatory at the apse. The upper reaches of the wall bear a large central rose window flanked by two smaller ones. The polygonal apse is in turn flanked by two short galleries, with ogive or pointed arches as entrances, which correspond to the original aisles of the Romanesque building and are located at the starting point of the ambulatory. The latter is divided by piers aligned with the rays of the apse's trapezoidal vaults, forming ten radial chapels. The high altar, in white marble, dates to the 11th century. Other artworks include the Gothic sarcophagus of Berenguer d'Anglesola, by Pere Oller, in the chapel of Isabella of Portugal, the Chapel of All Saints
Romanesque cloister
The Romanesque cloister is notable, featuring a series of columns with sculpted capitals: they depict fantastic figures and animals, and vegetable motifs. The frieze has instead scenes from the New Testament. Among the sculptors who worked at the cloister is Arnau Cadell, also author of the cloister of the Monastery of Sant Cugat. Also in the cloister is the Chapel of Our Lady of Gràcia i de Bell-Ull, which was originally a gate to the cloister, renovated in the Gothic period; its tympanum has an image of the Virgin by Master Bartomeu. The cloister's galleries are home to numerous tombs of rich members of the monastery, dating to the 14th to 18th centuries, one also by Master Bartomeu.
The museum's main attraction is the Tapestry of Creation, an 11th- or early-12th-century piece considered amongst the master works of Romanesque tapestry. Other artworks include:
The Gerona Beatus, a 10th-century illuminated manuscript;
A Renaissance Saint Helen Retable by Antoni Norri and Pere Fernández;
The theatrical Baroque bedstead for Our Lady of August, by sculptor Lluís Bonifaç i Massó, from Valls, and gilt by Bruno Rigalt, from Barcelona;
The Cross of the Pearls, a 16th-century gilt silver piece with enamel plaques which bears the image of Christ crucified on the front and the image of Our Lady of the Pearls on the back, designed by Pere Joan Palau and carried out by Antoni Coll, ca. 1503.
There are also other paintings and items, ranging from Medieval to Baroque, and including processional crosses, reliquaries, monstrances, etc.
