This church is one of the best-preserved Romanesque buildings and is a former Benedictine monastery located in the Raval district of Barcelona.

Although there is no exact information about its origins, it is thought to have been founded at the end of the 9th century. This date is based on the tombstone found in the monastery corresponding to the tomb of the Count of Barcelona, Wilfred II Borrell, son of Wilfred I the Hairy, who died on 26 April 911. It is also believed that it was the count himself who initiated the construction of a church on the remains of an old religious building and established a community of Benedictine monks there. The monastery was outside the protection of the city walls, hence its name, as it was located in the countryside.

As far as the building itself is concerned, the cloister is small and was built in the 13th century. Today it has only a single entrance, with three- and five-lobed arches. The arches are supported by twin columns topped with capitals decorated with a variety of motifs such as biblical themes, hunting scenes, mermaids, warriors, monsters, animals and plant motifs. The building is surrounded by a garden in which the old abbey house was built between the 13th-14th century and the beginning of the 18th century.

The church has a single nave with a Greek cross floor plan. It has three apses and a dome with a transept. The interior is covered with barrel vaults. The doorway of the church is framed by two columns topped by two ancient Visigothic marble capitals. On the tympanum is an image of Jesus surrounded by the apostles St. Peter and St. Paul. There is also an inscription inviting visitors to enter.