Coastal fortifications of colonial Chile

In Colonial times the Spanish Empire diverted significant resources to fortify the Chilean coast as a consequence of Dutch and English raids. During the 16th century the Spanish strategy was to complement the fortification work in its Caribbean ports with forts in the Strait of Magellan. As attempts at settling and fortifying the Strait of Magellan were abandoned the Spanish began to fortify the Captaincy General of Chile and other parts of the west coast of the Americas. The coastal fortifications and defense system was at its peak in the mid-18th century.