Castillo De San Marcos National Monument
Overview
Castillo De San Marcos National Monument is managed by National Park Service and is located near Saint Augustine, Florida. 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.
Things to Do at Castillo De San Marcos National Monument
Tours & Tickets
Experience guided tours, tickets, and special programs. Advance reservations recommended.
Recreation Activities
Popular activities at Castillo De San Marcos National Monument include:
Nearby Activities
- Historic & Cultural Site
Plan Your Visit
Reservation Tips
Castillo De San Marcos National Monument is a popular destination. Check individual facility pages for specific booking windows and availability.
Getting There
On State Route A1A overlooking Matanzas Bay in the heart of the historic district of Saint Augustine, the Castillo is approximately a five mile drive from Interstate 95.
GPS Coordinates: 29.89785701000000, -81.31217173000000
Current Alerts & Conditions
Notifications and Alerts
Beginning January 1, 2026, changes to National Park Entrance Fees and Passes for non-residents and motorcycles take effect. The new $250 America the Beautiful Non-Resident Annual Pass and all other America the Beautiful Passes are available digitally on Recreation.gov.
Contact & Resources
Phone: (904) 829-6506
Additional Information:
