St. Augustine, Florida
Fort Matanzas is 50 feet on each side with a 30-foot tower. It
is built of coquina, the same stone use in the construction of Castillo
de San Marcos. Seven soldiers were rotated from St. Augustine for
one-month duty tours at Matanzas. The fort was constructed to control
the Matanzas inlet fourteen miles south of St. Augustine and to prevent
penetration to St. Augustine.