America Begins Here

A monument not only of stone and mortar but of human determination and endurance, the Castillo de San Marcos symbolizes the clash between cultures which ultimately resulted in our uniquely unified nation.  Still resonant with the struggles of an earlier time, these original walls provide tangible evidence of America’s grim but remarkable history.


Upcoming Events!

Upcoming Events!

There are many ways to experience the Castillo de San Marcos National Monument. Check out our calendar to find a special event or program.

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Masons work on stabilizing the covered way wall.

Preservation in Action!

While stone walls look solid, time and weather take their toll and now NPS masons are engaged in a multi-year project to save the covered way wall.

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Wedding, Photography, and Film Permits

Information on these and other special park uses is available online. Just click on the 'Read More' link below.

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Fort Matanzas

Fort Matanzas has our back!

Fort Matanzas sits 14 miles south on Rattlesnake Island defending the southern inlet to the Matanzas River, the Castillo's proverbial 'back door'!

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Aerial view of the east side of the Castillo de San Marcos


The people of St. Augustine fought for a stone fortress because they were fighting for their lives in Florida.

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National Park Service Arrowhead

Rules and Regulations

The Superintendent's Compendium can answer many of the questions you may have about visiting the Castillo.

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British soldiers descending the stairs at the Castillo de San Marcos

Weapons of War!

Men need tools to wage war; and to prevent it.

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Did You Know?