America Begins Here

Built by the Spanish in St. Augustine to defend Florida and the Atlantic trade route, Castillo de San Marcos National Monument preserves the oldest masonry fortification in the continental United States and interprets more than 450 years of cultural intersections.

3D Rendering of Castillo de San Marcos NM

Castillo Virtual Tour

The Virtual Tour for the Castillo de San Marcos National Monument in St. Augustine, Florida.

Exhibit pane with text and flags in fort's casemate.

Things To Do

Review the menu of opportunities awaiting you.

Grass in foreground, splanish flag centered in image, chapel door and walls in background

Operating Hours

Learn more about the Castillo's hours of operation.

Seawall on east side of the fort. Wall, palm trees, water, and sail boats in background.

Learn About the Park

Explore photos, history, education opportunities, and more.

image of castillo de san marcos with film type frame

Castillo Videos

Explore the many stories of Castillo de San Marcos with these short videos.

Evening program in the courtyard by candlelight

Calendar of Events

Check out our calendar to learn more about upcoming special events.

Black & White image of Castillo's well in 1875

Photos & Multimedia

The interior well of Castillo de San Marcos in 1875-1878. And a room with windows in the South West corner.

Image of gun deck with cannons, bell tower, water, and palm trees.

Entrance Fees

Learn about parking and entrance fees.

Wheel chair and service dog.

Accessibility

Learn more about accessibility at Castillo.

Fort surrounded by grassy hill and palm tree.

Field Trips

Learn how to coordinate a curriculum-based experience for students.

Map of park on park app .

Park Mobile App

Download the Official Park Mobile App.

Last updated: October 29, 2020

Contact the Park

Mailing Address:

1 South Castillo Drive
Saint Augustine, FL 32084

Phone:

(904) 829-6506

Contact Us