Construction A tower, now the bell tower, was started around 1170. It was completed between 1195 and 1200. Around 1190 the canons decided to build a more imposing church to welcome the growing numbers of pilgrims. The
apse was completed in 1205. The apse was some distance to the east of the tower. Construction then continued westward from the apse towards the 12th-century tower, which eventually became the entrance to the collegiate church. There were frequent disputes between the chapter and the Bishops of Noyon, whose authority they refused to recognize. In the early 1220s Bishop Gérard de Bazoches placed the chapter under interdict, but in 1228
Pope Gregory IX rescinded the interdict. That year Nicolas de Roye, who was related to several of the canons, became the new bishop after Gérard's death. Later in 1228 the relics of Saint Quentin, Saint Victoric of Amiens and Saint Cassian of Auxerre were moved from the old crypt to a temporary location in the nave. The remains of the saints were exposed for veneration. Their heads, hands and arms were detached from their bodies, and each body part was placed in its own
reliquary. After completion of the sanctuary the reliquaries were placed behind the high altar. The crypt, its tombs now empty, was preserved as a sacred place. A synod was held in the church in August 1231. The archbishop sat in the center of the apse, with the bishops of
Soissons,
Beauvais,
Noyon,
Tournai and
Senlis to his left, and the bishops of
Laon,
Châlons,
Amiens,
Thérouanne and
Arras to his right. In 1257
Louis IX of France (1214–70) (Saint Louis) attended a great ceremony in which the relics of the saint were translated to the
choir. The choir was mostly completed at that time apart from the high windows, which were built in the last third of the 13th century. Construction proceeded slowly due to lack of funds and structural problems. In 1316 the master mason Jean Le Bel had to strengthen the pillars of the choir. His successor, Gilles Largent, repaired the cracked
vaults in 1394. In 1477 King
Louis XI (1423–83) donated 1,000 gold crowns to completely rebuild the south arm of the small
transept, which was at risk of collapsing. The large transept was completed in the middle of the 15th century. The nave was completed in 1456, finally linking the apse to the 12th-century tower of St. Michel. The portal in the tower was completed in 1477. In 1509 foundations were laid for a massive facade with two towers to replace the existing entrance tower, but this project was soon abandoned due to lack of funds.
Fire, war and revolution The building was damaged by a large fire in 1545, and by another fire during the Spanish
siege of 1557. There was yet another fire in 1669. During the
French Revolution (1789–99) the building was damaged by
Jacobins who converted it into a
Temple of Reason, then a fodder store and a stable. The building was given a
Monument historique classification in 1840. During the
Franco-Prussian War (1870–71) the building damaged by 18 shells on 19 January 1871. The building was designated a minor basilica in 1876 by
Pope Pius IX. During
World War I (1914–18) the city was occupied by German forces on 28 August 1914. The priest managed to hide the most valuable possessions. On 1 July 1916 an allied airplane dropped a bomb on the railway station, which ignited a wagon of explosives. Great damage was done to the buildings of the city by the explosion, and seven of the large windows of the basilica were broken. The city was evacuated on 15 March 1917. The church roof was destroyed by fire on 15 August 1917. When French forces recaptured Saint-Quentin on 1 October 1918 they arrested a German engineer who was preparing to blow up the severely damaged building. 93 holes had been made in the walls and pillars and filled with explosives for this purpose. By then the vaulting of the central nave had completely collapsed. Parts of the flying buttresses had been destroyed, and the walls and buttresses had many breaches. There was a risk that falls of unstable masonry could trigger larger collapses.
Modern reconstruction Reconstruction of the basilica began in 1919, directed by the Historical Monuments Commission. Emile Brunet was charged with reconstruction. As a first step about of cut stone and rubble were cleared by German prisoners of war. Some further damage was caused to carvings and decorations in the process. Specialized workers undertook urgent reinforcements of masonry, and parts of damaged sculptures were stored for later restoration. A temporary roof was built to protect the structure from weather, covered by fibro-cement and Ruberoid sheeting. It took 25 years to complete the basic restoration. The surviving 13th-century stained glass windows were reinstalled in 1948, with modern windows made by
Hector de Pétigny (1904–92) to replace those that were missing, The restored basilica was reopened for worship in 1956. The steeple over the transept crossing was only finished in 1983. Further restoration work was undertaken in 2006 to clean the walls and restore the gatehouse to its state at the end of the 17th century. ==Building==