The Church of Santa Maria de Sils is mentioned in a papal bull issued by Pope Lucius III in 1185, in which it appears among the possessions of the Benedictine Monastery of Sant Salvador de Breda. It was originally a church, possibly of Romanesque origin, located at the centre of a group of houses near the lake. In the 1358 document Constitucions dels castells (“Constitutions of the Castles”), the parish of Sils is recorded as forming part of the Viscountcy of Cabrera. The building was extensively renovated in the 18th century in a Baroque and Neoclassical style, although it retains a Gothic side chapel and a 14th-century tombstone beside the entrance. The bell tower was remodelled in 1907 by the Girona architect Rafael Masó.