sentences:  In the 19th century some changes, such as the 4 esplanades built to accommodate a corresponding number of artillery pieces, were added at La Punta.In 1851 the Spanish executed most of the prisoners they held at La Punta, including Venezuelan adventurer Narciso López, after a failed attempt to liberate Cuba that caused outrage in the United States.The castle, in 1997, was under an intense work of restoration, (by the City’s Historian Office), that gave it its original position on the rocks.