St. Augustine is the first city in the New World. There is much history to explore. The history of war and defense of the founders is a major part of St. Augusinte. The two forts available for touring are very different in their design but have a history that is interlocked. Matanzas is a Spanish outpost fort that was built in 1740-1742 to guard the Matanzas Inlet and to warn St. Augustine of British or other enemies approaching from the south. The Castillo was constructed in 1692.Changes in occupation of the fort came about only through military agreements or political treaty from Spanish to British to American Confederacy and then the USA. Amazingly, the Castillo was never taken by force. Like Matanzas it is built of Coquina, a combination of stone and shells.