Fortifications on the Caribbean Side of Panama: Portobelo-San Lorenzo

Portobelo y el San Lorenzo del Chagres: Perspectivas imperiales, siglos XVI–XIX

A comprehensive two-volume work by Alfredo Castillero Calvo sheds new light on Portobelo and San Lorenzo, revealing their pivotal role in the Spanish imperial trade system from the 16th to 19th centuries. The study demonstrates that despite the decline of the Galeones trade after 1664, Portobelo remained a critical hub for transisthmian commerce, defense, and urban life, with its fortifications playing a key role in deterring foreign invasions, such as Edward Vernon's failed 1742 assault. Castillero Calvo's exhaustive analysis, based on original research from Spanish archives, explores the evolution of Portobelo's defenses, military finance, and societal dynamics, while contextualizing Panama's place within broader Spanish American history. The work also highlights the resilience of local elites in commerce and their shifting economic dependence post-fairs.