Archivo General de Simancas AGS

History and Founding

The Archivo General de Simancas (AGS) is one of the oldest and most important official archives in the world, founded in 1540 when Holy Roman Emperor Charles V ordered the consolidation of royal documents in the Castle of Simancas, a fortified stronghold approximately 10 kilometers from Valladolid. It is the first official archive of the Crown of Castile. The castle itself was built between 1467 and 1480 and had previously served as a weapons cache and state prison.

A landmark moment in the archive's history came in 1588 when Philip II of Spain issued the Instrucción para el Gobierno del Archivo de Simancas, a foundational document for the management of state archives across the Iberian Peninsula. In 2017, UNESCO inscribed the archive on the Memory of the World International Register in recognition of its extraordinary documentary heritage.

Collections and Holdings

The AGS holds the primary documentary record of the Hispanic Monarchy from the 16th through 18th centuries, with some materials dating to the medieval period. Its holdings are divided into 28 broad documentary sections, encompassing records of the major councils of the Spanish Empire, including the Consejo de Estado, Consejo de Guerra, Consejo de Hacienda, and Secretarías Provinciales. The archive also holds a significant collection of maps, plans, and drawings, the entirety of which has been digitized.

Materials of particular relevance for researchers of North Africa, the Mediterranean, and the Islamic world are found in the Patronato Real and Secretarías del Consejo de Estado sections. Records relating to the Americas were partially transferred to the Archivo General de Indias in Seville in 1785.

Journalism and Media-Related Materials

The AGS holds extensive diplomatic correspondence, official newsletters, and records of the royal printing houses, which are foundational sources for the history of early modern communication, censorship, and news dissemination in the Spanish Empire.

Access and Usage

The archive is open to accredited researchers. On-site consultation requires prior registration. An increasing portion of its holdings is searchable and partially accessible via the PARES portal (Portal de Archivos Españoles), maintained by the Spanish Ministry of Culture. Researchers may use only pencils and laptops in the reading rooms.