23. Cartagena - Castillo de San Felipe

Castillo de San Felipe is the most magnificent fortress built by the Spaniards for any of their colonies. Cartagena, founded in 1533, was the main port from which Peruvian silver was shipped back to Spain, and as such, became a target for pirates. The Spaniards attempts at making the port impregnable consisted of walling in the city, and constructing forts, the most impressive of which is Castillo de San Felipe.Read more