Although Ucha was commissioned in 1919, the works could not begin until 1925 due to problems with existing structures on the site. For this reason, the project had to be modified even when work had already begun.
The architect chose the construction of a single, diaphanous and versatile nave of neo-Gothic inspiration. Artists such as Agustín López Miras and José María Rivas from Santiago de Compostela, the painter Camilo Díaz Baliño, who designed the stained glass windows of the apse and the choir, and the Portuguese Antonio Afonso de Viana, who designed the neo-Gothic vault, took part in the execution of the works and the decoration.
The exterior decoration mixes modernist vegetal elements with symbols typical of the Order of the Blessed Virgin Mary of Mercy. Thus, the two levels of the façade are divided by the chain symbolising the order and two Mercedarian coats of arms.
Inside, the pointed arch and certain elements such as the capitals, cornices, stained glass windows, religious furnishings and neo-Gothic style images are in line with the eclecticism of the time.
