Originally a small Gallo-Roman town built on the promontory of Montjoie and bordered by the Hurride and the Garonne, Cazères appears in history in the medieval period. A first church was then erected there[2].
Dependent successively on the house of Comminges then on the county of Toulouse, Cazères came under the house of Foix in the 14th century, then headed by Gaston Phœbus. During this period, the city suffered from unrest and wars which ravaged their region. This is how in 1355 the original church was destroyed by the English troops of the Black Prince[2].
At the end of the 14th century, the construction of a new church was launched, which would have the title Notre-Dame and Saint Quitterie as its patroness.
In the 18th century, the church had the reputation of being the best decorated in the diocese of Rieux.
During the Revolution, it was mutilated and stripped of its spiers and chapels. It was not until 1888 that its facade was restored by the architect H. d'Espouy who designed the two octagonal towers between which stands the Virgin of the Assumption.