The Solsonès Regional Archive (ACS), which is part of the Generalitat Archives Network, was inaugurated on March 30, 1995. The creation agreement was signed on January 31, 1984. It currently holds more than 1,000 linear meters of documentation and, chronologically, it spans from the 13th century to the present day.

Among the documentary collections that make up the archive are the City of Solsona Archive and the old notary of the Solsona district; alongside it, due to its special importance, we must add the Josep Maria Vicens i Purgimon (1910-1955) photographic collection, as well as a significant number of collections from the Solsona associative fabric: the Orfeó Nova Solsona, the Associació de Festes del Carnaval, etc. In 2010, the ACS celebrated its 15th anniversary; During this time, it has gathered more than 160 documentary funds and collections, and has consolidated a strong bond with the society of Solsona.

The archive is closely related to the territory and, since its birth, had a great territorial vocation. This reality is evident in many facts; for example, more than 89% of the documentary funds of the local Administration are in the Regional Archive. Its premises occupy part of the old hospital of Llobera, an outstanding building of Catalan civil Gothic.