From a manuscript of the tenth century, to the Proceedings of the Governing Council of the Republican Government, and including archives and personal collections of illustrious personages of the Catalan society in the 19th and 20th centuries such as Francesc Macià, Prat de la Riba, Eugeni D'Ors and Carles Riba. Since 1980, the National Archive of Catalonia (Arxiu Nacional de Catalunya, ANC) has been the institution in charge of gathering, preserving and disseminating the documentary heritage of the country.

As the general archive of the government, the ANC receives, restores and manages the documentation generated by the political and administrative actions of the Generalitat de Catalunya. As a national historical archive, it is dedicated to the restoration of documentation which is key to the knowledge of our past.

In addition to the archives from the administration, associations and foundations, and from the Church, particularly notable among its more than 900 holdings and documentary collections are the personal holdings and the manuscript, scroll and printed collections.

The history of the national archives of Catalonia began in 1936, during the Spanish Republic, and was restarted with the end of Franco's dictatorship. The current headquarters in Sant Cugat is a modern building featuring the latest technologies to ensure the best preservation of documents.