Castillo de San Marcos National Monument

The Castillo de San Marcos is a Spanish built fort located in the city of St. Augustine, Florida. It was known as Fort Marion from 1821 until 1942, and Fort St. Mark from 1763 until 1784 while under British control.

The Castillo is a masonry star fort made of a stone called "coquina", literally "little shells", made of ancient shells that have bonded together to form a type of stone similar to limestone.

Workers were brought in from Havan, Cuba, to construct the fort.

Construction lasted twenty-three years, being completed in 1695

Unfortunately, my batteries died and these were the only pictures I got of the fort.