Castillo de San Marcos


Castillo de San Marcos

Not long after Pedro Menendez de Aviles founded St. Augustine in 1565, the need for a fortified structure became evident.
Over the next 100 years, nine wooden forts were built at various sites throughout the settlement.

After an attack by English pirate Robert Searle in 1668, Governor Francisco de la Guerra petitioned Mariana, Queen Regent of Spain, for a masonry structure to be built to protect the citizens of St. Augustine and Spain’s interest in the region. Construction of the Castillo de San Marcos began in October 1672.

Like many of St. Augustine’s older structures, the Castillo is made from the stone coquina, which is Spanish for shells.

The fort was built by Native American laborers and workers brought in from Havana, Cuba over the next 23 years. It was completed in 1695.

Coquina, which is similar to limestone, is a composite of small shells that have bonded together. The coquina used to build the Castillo was quarried form nearby Anastasia Island and ferried across the Matanzas Bay to the construction site.

The stone proved very effective in absorbing the impact of shells from English cannon, which made it in an invaluable tool in the survival of the fort as was as the city of St. Augustine.

Over the next 120 years, Spain and England fought for control of Florida, and ownership of the fort was traded back and forth between them. Though the fort now bears its original name, during the British occupations it was called Fort St. Mark and Fort Marion.

The Castillo de San Marcos is open daily from 8:45 a.m. to 5:15 p.m. Admission is $7 for adults. Children 15 and under are free.


Address: 1 S. Castillo Drive

Phone: 904-829-6506