Castillo de San Marcos National Monument


Established in 1565, St. Augustine, Florida is the oldest permanent European settlement in the continental U.S.  Its centerpiece is Castillo de San Marcos National Monument, a four-sided stone fort dating back to 1672.  In 1702, the British army unsuccessfully besieged the Spanish fort for 50 days, but before they left they burned the entire city.  This explains why the oldest house in St. Augustine dates to this time period and why this charming coastal village is still laid out on a grid of narrow streets, as it was one of the first master-planned communities in America.


Historic fort, museum, cannon demonstrations

Must-Do Activity

The National Park Service (NPS) charges an admission fee to enter the fort, but you can watch the cannon-firing demonstrations atop its corner bastion for free from outside.  Costumed reenactors shout orders in Spanish before firing the big cannon.  There is only one entrance to the Castillo de San Marcos across a wide moat.  Your entrance fee also allows you to explore the powder magazines and interpretive displays inside the fort’s walls.

Best Trail


Instagram-worthy Photo

The Castillo was renamed Fort Marion by the U.S. military in 1825, when the final changes were made to the coquina structure.  In 1924 it was named a National Monument along with nearby Fort Matanzas.

Peak Season




$15 per person or America the Beautiful pass

Road Conditions

Roads are paved, but there is limited pay parking at the fort, which is especially an issue on busy weekends.


Anastasia State Park is located just south of St. Augustine, Florida with access to a nice beach.

Related Sites

Fort Caroline National Memorial (Florida)

Fort Matanzas National Monument (Florida)

Dry Tortugas National Park (Florida)

Explore More – Which nation controlled the fort during the American Revolution until its conclusion in 1783 (Hint: It was called Fort St. Mark at the time)?

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