History
The Castillo de San Marcos: More Solid Than a Rock
St. Augustine’s Castillo de San Marcos has seen fifteen battles and two sieges without a defeat and has withstood almost 350 years’ worth of rain, floods, and hurricanes. What accounts for the success and longevity of this oldest masonry fort in the U.S.? One word: Coquina. Spanish for “tiny shell,” Read more…