In addition, it is surrounded by a perimeter moat, it was built with stone blocks.

Despite being a military fortress, the Castle of Santo Domingo de Atarés never entered combat.

However, it was bombed by forces of the Cuban Army and Navy, in 1933, when it was occupied by the disaffected Ramón Grau San Martín government.

Inside there is a small central parade ground, six vaults, an armory, and several warehouses that once housed food and supplies.

The platforms for the heavy artillery are on the roof, from where they had a fairly wide range over the bay and the city.