Di Ferro’s 1825 account provides the principal historical description of the church’s artistic programme. As later noted by Maria Concetta Di Natale, his writings constitute a fundamental source for the reconstruction of Trapani’s decorative heritage, much of which has been altered or lost over time. His description therefore reflects the appearance of the church in the early nineteenth century and preserves evidence of artworks that may no longer survive in situ. Di Ferro described the interior of the church as richly decorated with polychrome marble and stucco. The entire floor was inlaid with marbles of various colours, while the Ionic pillars were also executed in marble. The vaulted ceiling was ornamented with stucco and gilding, and at its centre was a
sotto in sù fresco depicting a vision of Saint Thomas Aquinas by
Andrea Carreca, later altered by a modern retouching. On the first altar on the right, decorated with locally quarried agate, was a painting by Carreca representing the Ecstasy of Saint Catherine of Siena supported by angels. Di Ferro praised the saint’s expression, the delicacy of the angels’ faces, and the refined treatment of their wings, noting the harmony of composition and restraint in emotional tone. Opposite stood an altar dedicated to Saint Dominic, with a painting by the painter known as the Morrealese, admired for its purity of drawing, graceful drapery, and balanced composition. The artist replaced the traditional star above the saint’s head with a symbolic angel presenting an open book referring to Ecclesiastes 50:6, representing Dominic as a shining light among the nations. In the second chapel on the Gospel side stood a marble statue of the Virgin of Succour (Madonna del Soccorso), titular of the church. The statue was sculpted by the Trapani-born Cristoforo Milanti and placed within a marble architectural frame by Canon Giovanni Amico. Di Ferro praised its proportions and contours, while noting the relative rigidity of the drapery, which nevertheless demonstrated the sculptor’s technical skill. The high altar, considered the architectural focus of the church, was entirely composed of
pietre dure with finely matched coloured inlays. It was designed and executed by the Trapani sculptor Federico Siracusa, who also carved the relief and low-relief decoration. On the high altar was placed a painting of the Virgin of the Rosary with Saint Dominic and Saint Catherine of Siena by a Flemish painter, admired for its mastery of chiaroscuro, harmonious colour, and soft modelling, and regarded as one of the finest paintings in Trapani’s public buildings. ==References==