The function of this fort was the defense of the city of Ancud, in which it protected the southern coast of the Chacao Channel.

[1] The fort was built between 1776 and 1779, according to the plans of the engineer of Spanish descent Miguel de Zorrilla.

[5] The main objective with the remodeling of the fort was for the conservation and recovery of the historical and cultural heritage, as well as to encourage tourism on the island of Chiloe.

[6] In 2016, the people responsible for the remodeling received the Ibero-American award for the restoration of the fort granted by the International Center for Heritage Conservation and the Central Society of Architects, the restoration of the fort is part of the "10th version of the Ibero-American Award for the Best Intervention in Works Involving Built Heritage".

[7] The fort has a dungeon, a powder magazine and an access built with cancagua stone extracted from a quarry near Ancud.