• Cannon firing on the gundeck of the Castillo de San Marcos

    Castillo De San Marcos

    National Monument Florida

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  • Summer Weather

    Afternoon Thunderstorms can create dangerous amounts of lightning strikes. If Lightning is visible from the Castillo, Gundeck closures will take place. Click this link for the local weather forcast. More »


The Castillo is not fully accessible to persons in wheelchairs

The Castillo de San Marcos was built for ancient warfare, not for public touring. Unfortunately, the need to preserve the historical and architectural integrity of the fortress limits access to some areas.


Free parking is available in the visitor lot for properly identified vehicles.

The Park can provide a wheelchair for use while visiting the fort. Rental wheelchairs and other conveyances are available from a nearby concession.

The parking lot and the fort's lower level, which includes the museum rooms, the theater, the bookstore and the restrooms, are wheelchair accessible.

Most of the Park's pedestrian walkways are paved; however, those within the moat and covered way are sand and crushed shell stone. The Gun Deck Level can only be reached by stairs

Interpretive Services

The Park brochure is available in English.

Self-guide tour brochures are available in English, Spanish, German, Japanese, Russian, Dutch, Italian, Portuguese, and French.

The Park Orientation Video is in English with closed-captioning.

Did You Know?

Bronze Spanish cannons look out over the city of St. Augustine

Black, or gun, powder is a mix of potassium nitrate, sulfur, and charcoal used as a propellant charge in cannons. Burning rapidly when ignited, it expands 600 times its volume creating pressures that can hurl a cannonball up to 3.5 miles! Castillo de San Marcos National Monument, Florida