Most of the church’s capitals show biblical themes, from both the Old and New Testaments. A visual tour of the capitals would make it possible to identify different scenes like the adoration of the Magi, Jesus entering Jerusalem, Saint Thomas's doubt, the presence of the Sacred Women before the tomb... What really stands out, though, is the theme of the Annunciation and the Visitation, two scenes juxtaposed, one next to the other, and repeated on four more capitals in the temple.

The insistence on this specific New Testament theme is linked to the fact that the church is consecrated to Saint Mary but also to the defence of Mary's image made by the Church of Lleida at historical moments of crisis when heretics, mainly Cathars and Muslims, had to be fought.

All in all, the church’s Romanesque capitals constitute one of the most relevant collections of its kind from 13th-century Catalonia and one of the most complete from the Iberian Peninsula in terms of iconography.