Castillo de San Marcos National Monument

Crossing a dry moat, this drawbridge was the only way into the Castillo.
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.
Map showing location of park.
Castillo Seawall Project Begins in July
On July 27, Castillo de San Marcos National Monument will begin mobilizing for construction to replace, raise and rehabilitate the park’s failing seawalls and protect the historic fort and the broader St. Augustine community. Visitor access to the historic fort will be maintained throughout this project, which is expected to take approximately 18 months.  Some areas on the fort grounds will be closed to ensure public safety during construction.
Castillo Visitor Parking Lot will Close to Vehicles on July 4 for Florida Freedom Tour
On July 4, Castillo de San Marcos National Monument and the city of St. Augustine will close vehicle access to the main visitor parking for the Florida Freedom Tour and Independence Day events.
Project to Raise and Rehabilitate the Fort’s Seawalls
Castillo de San Marcos issues “Finding of No Significant Impact (FONSI)” for the project to Raise and Rehabilitate the Fort’s Seawalls
Drawbridge entrance to the Castillo de San Marcos
Photo by NPS Photo
Furnace for heating cannon balls
Photo by NPS Photo
Four black iron cannon mounted on carriages line the walls of the Castillo.
Photo by NPS Photo
Re-enactors of the first Spanish period cover their ears while firing a cannon.
Photo by NPS Photo
Aerial view of the Castillo and the city of St. Augustine
Photo by NPS Photo