Plaza de la Revolución
The fort was home to the National Archive from 1899 and the National Library from 1938 up until 1957, when both were relocated to a purpose-built library in Plaza de la Revolución. After the Cuban Revolution in 1959, the fort housed the offices of the National Commission of Monuments and the Centre of Preservation, Restoration and Museology. The fort served briefly as the Museum of Arms, but the conditions within the fortress were not conducive to the preservation of the displays.