Castillo de San Marcos

No kidding, it's a Spanish fortress in the USA, he he he. It's been very well preserved and they still fly the Castile flag. St. Augustine was founded by Spain in 1565. During its first century of existence, nine wooden forts defended its position near the sea. After the English pirate Robert Searle attacked it in 1668, they decided to build a stone castle to protect the city. The construction of the Castillo de San Marcos began in October 1672. In 1818 the Americans renamed the castle Fort Marion. There was little change, although some areas were transformed into cells, which were then used during the Seminole wars.