Spanish Coquina Quarries, Historic quarry site in Anastasia State Park, St. Augustine Beach, Florida, United States

The Spanish Coquina Quarries are a historic site off A1A in Anastasia State Park, St. Augustine Beach, Florida, where coquina, a sedimentary rock of shells and sand, was quarried. The quarries were listed on the National Register of Historic Places in 1972.

Spanish settlers began mining stone here in the late 1600s to build the Castillo de San Marcos and other structures in St. Augustine. These quarries were essential to the city's construction and development.

The quarries show how Spanish settlers used local stone to construct their colonial city. Walking through the site, you notice how this work shaped the appearance of St. Augustine.

The site is accessible daily within a state park setting, so comfortable shoes and staying on marked paths are important. Early morning visits often provide the best conditions and fewer crowds for exploration.

The shell limestone hardens and becomes stronger over time when exposed to air, making it an unusually durable material for the ages. This natural process of strengthening allowed the city's structures to survive for centuries without failing.