At the beginning of the 20th century, a notable interest arose in the study and cataloguing of the Romanesque mural paintings present in the churches of the Boí Valley. These works, until then little known outside the local area, began to attract the attention of both art specialists and people motivated by commercial interests. In 1907, the valley was included in the route of the Archaeological-Legal Mission to the border of Aragon, an initiative promoted by the Institute of Catalan Studies with the purpose of protecting the artistic heritage of Catalonia. This expedition, formed by prominent intellectuals such as Josep Puig i Cadafalch, Guillem Marià Brocà, Josep Gudiol, Josep M. Goday and Adolf Mas, was in charge of investigating, documenting and classifying a large part of the churches in the area.

Between 1905 and 1909, the Board of Museums of Barcelona made faithful copies of the frescoes of the Catalan Pyrenees, whose subsequent publication aroused the interest of the art world nationally and internationally. This diffusion generated a strong demand for these works, especially by museums and private collectors, which led to the purchase and sale of numerous pieces through intermediaries. After 1919, many of these paintings ended up in collections and museums, particularly in the United States.

However, the case of the village of Taüll was a significant exception. The local community strongly opposed the removal of their artistic works, especially the frescoes, and managed to involve the Mancomunitat de Catalunya and the bishopric of Seo de Urgel in their defense. Thanks to this joint intervention, it was concluded that the paintings would be safer in a controlled environment, and it was decided to transfer them to the museum in Barcelona for their conservation. To this end, a team of Italian restorers was hired to carefully remove the paintings from the walls and, in some cases, to make reproductions in the original locations.

Since then, the Romanesque paintings of Taüll preserved in the museum acquired renown and aroused the interest of historians and art experts. This prompted the systematic study of the mural paintings of the churches of the Boí Valley. Today, most of these works are kept in institutions such as the National Art Museum of Catalonia (MNAC) and the Episcopal Museum of Vic, where they are preserved and exhibited as fundamental pieces of European Romanesque heritage.