Current NPS alerts (2)
Construction for Seawall Project
Starting July 27, 2026, Castillo de San Marcos National Monument will begin construction to replace, raise and rehabilitate the park’s failing seawalls. The historic fort will remain accessible throughout the project. Some areas outside of the fort will be closed for safety.
Fee Stations Credit Card Only
Fee Stations are only accepting credit cards for the purchase of entry tickets and passes.
Weather alerts (National Weather Service)
Wind Advisory
Wind Advisory issued October 24 at 8:22PM EDT until October 25 at 8:00PM EDT by NWS Jacksonville FL
Coastal Flood Warning
Coastal Flood Warning issued October 24 at 12:23PM EDT until October 26 at 8:00PM EDT by NWS Jacksonville FL
Rip Current Statement
Rip Current Statement issued October 24 at 12:23PM EDT until October 26 at 8:00PM EDT by NWS Jacksonville FL
High Surf Advisory
High Surf Advisory issued October 24 at 12:23PM EDT until October 26 at 8:00PM EDT by NWS Jacksonville FL
About this site
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.
- Type
- National Monument
- State
- Florida
- Address
- 11 South Castillo Drive, Saint Augustine, FL 32084