During the High Middle Ages, Montserrat as the southern limit of this border of Old Catalonia was called the mountain of the Black Rocks. In 933, at the time of Guifré’s son, Sunyer I, we already find it documented as Mont Serrat. In 1025 and on its north face, the bishop Abbot Oliba de Vic turns the priory of Santa Maria, Sant Iscle and Sant Pere into the abbey of Santa Maria dependent on that of Santa Maria de Ripoll and obedient to the diocese of Vic . To defend this new monastery, a tower was built which, subsequently, would be called Montserrat Castle, the fortification built at the highest height of all the Guifré castles, at 920 metres.
In the old location there is now the hermitage of Sant Dimes, with complicated access. On the other hand, the contemporary Romanesque portal to the castle is located in the porches of the abbey and can always be visited.
This castle is linked to the castells de frontera de Guifré
This text was translated by an automatic translator