Romanesque art was an artistic style that developed in Western Europe between the 11th and 13th centuries. This was initially a very austere style as it used mainly for its constructions broken stone.
In this artistic style, the art of architecture was fundamental. Thus, many castles, churches, bridges, monasteries and palaces were built.
On the other hand, religion played an important role in society during the Middle Ages. For this reason, churches have an exceptional weight in the artistic samples that are still preserved today.
The churches corresponding to this artistic style stand out for being in the shape of a Latin cross, its distribution in three naves and with barrel vaults inside.
Oliana and Alt Urgell,  were part of the county of Urgell at the time, are a magnificent example of Romanesque art, the Cathedral of La Seu d’Urgell and the church of Sant Climent in Coll de Nargo in the 11th century.
In the valley of Oliana we can find Sant Andreu del Castell with its abandoned medieval village or on the other side of the Segre we can find Castellebre with its cemetery placed on a balcony has a panoramic view of the entire Oliana Valley.