Fuerte de San Diego, Acapulco

Fuerte de San Diego stands on a hill above Acapulco's harbor, built in 1616 under royal order to defend the port and the Manila galleons that carried silver, silk, and porcelain between New Spain and the Philippines for more than two centuries. The original star-shaped fort, following the pentagonal bastion design typical of Spanish military engineering, was severely damaged by an earthquake in 1776 and rebuilt in its current form by the 1780s, with thick stone walls, a dry moat, and five projecting bastions arranged to give defenders overlapping fields of fire. Since 1986 the fort has housed the Museo Histórico de Acapulco, whose galleries are arranged chronologically across the fortress's original chambers and ramparts, moving from pre-Hispanic settlement in the bay through the Spanish conquest, the establishment of the Manila galleon trade route in 1565, and on to the 19th-century wars of independence and the growth of Acapulco as a modern resort. Exhibits include scale models of galleons, period cannon and armor, porcelain and lacquerware recovered from the transpacific trade, and maps charting the route between Acapulco and Manila. The vaulted brick-and-stone interior rooms retain much of their original masonry, and the upper ramparts, restored for public access, offer views over the bay that let visitors see the defensive logic of the fort's position. Restoration work carried out by INAH in the 1980s stabilized the walls and bastions and converted the barracks and powder rooms into exhibition space while preserving the fortress's original layout and materials.