Essential Guide to Exploring Castillo de San Cristobal in Old San Juan
Rising almost 150 feet above sea level, the Castillo de San Cristóbal (Saint Christopher’s Castle) is a massive structure that occupies most of the northeast edge of Old San Juan. Built mainly over a 20-year period (1765-1785), San Cristóbal was over 200 years newer than Castillo San Felipe del Morro, Puerto Rico’s military stalwart at the time.