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

    Castillo De San Marcos

    National Monument Florida

There are park alerts in effect.
show Alerts »
  • 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 »

Traveling Trunks

Use Park resources and topics to enhance your classroom! Educators are encouraged to borrow a kit that includes hands-on educational materials and lesson plans for classroom-use. To reserve a trunk and schedule a pick-up and drop-off time, please call us at (904) 829-6506 ext. 233.

Castillo de San Marcos Trunk Topics and Lessons Include:

1. Introduction to the Castillo de San Marcos

2. Create a Timeline of Castillo's History

3. Spanish Uniforms and their Functions

4. Form Connections with the Countries in Control of the Castillo using Maps

5. Letter Writing from a Soldier's Perspective

6. The Preservation and Importance of National Parks

Did You Know?

The angled walls of the castillo cast abstract shadows in the sunlight

Started by the Spanish in 1672, the Castillo de San Marcos is the oldest masonry fort in North America. Castillo de San Marcos National Monument, Florida