Free Admission at Castillo de San Marcos
Friday, July 3, 2026 to Sunday, July 5, 2026
9:00 AM – 5:00 PM
Castillo de San Marcos
11 S. Castillo Dr.
St. Augustine, FL 32084
Admission
Free
Overview
Visit Castillo de San Marcos National Monument during a special fee-free weekend from July 3–5, 2026, in celebration of Independence Day and America's 250th anniversary. Explore the nation's oldest masonry fort, discover centuries of history, and enjoy stunning views of Matanzas Bay. The Castillo is open daily from 9 a.m. to 5 p.m. Admission is free. 11 S. Castillo Dr., St. Augustine. www.nps.gov/casa
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National monument, the Castillo de San Marcos, is the oldest masonry Fort in the United States and the only standing 17th century military construction. It is also one of two…