First, a bit of history! Castillo de san Marcos is a true piece of Florida and American history, located on the Matanzas Bay in St. Augustine, Florida. It was built by Spain (who also founded St. Augustine in 1565) in 1672, and was originally a wooden fort. After an attack in 1668, the entire city was burned down, and it was necessary to build the fort out of something other than wood! There weren’t many supplies available, and it was decided to use coquina (which means “small shells” and is similar to limestone) to construct the fort/castle. Nobody can really