Recent Searches
ClearExplore St Augustine
St Augustine Tours
Art & Culture
Back to main
St Augustine Tours
Art & Culture Classes
Arts & Design
Culture
Pop Culture
Traditional Wellness
Classes & Workshops
Back to main
St Augustine Tours
Art & Culture Classes
Food & Drink
Back to main
St Augustine Tours
Coffee & Tea
Desserts & Sweets
Food Tours
Wine, Beer & Spirits
Outdoor Activities
Back to main
St Augustine Tours
Extreme
Fun & Games
In the Air
Motor Sports
Nature and Wildlife
On the Ground
On the Water
Seasonal & Special Occasions
Back to main
St Augustine Tours
Holidays
Tickets & Passes
Back to main
St Augustine Tours
Attractions & Museums
Packages & Special Events
Sporting Events
Tours, Sightseeing & Cruises
Back to main
St Augustine Tours
Cruises & Sailing
How to Get Around
Private and Luxury
Sightseeing Tours
Tours by Duration
Travel & Transportation Services
Back to main
St Augustine Tours
Services
Attractions
Recommendations


Castillo de San Marcos National Monument
724 Reviews
Free admission
St. Augustine’s Castillo de San Marcos National Monument is the oldest masonry fort in the United States and the only intact 17th-century fort. Constructed by the Spanish in 1672 to protect their New World territories, it eventually passed to the British and Americans, and it played a crucial role in the Civil and Spanish–American wars.
Learn more
Castillo de San Marcos National Monument
St. Augustine’s Castillo de San Marcos National Monument is the oldest masonry fort in the United States and the only intact 17th-century fort. Constructed by the Spanish in 1672 to protect their New World territories, it eventually passed to the British and Americans, and it played a crucial role in the Civil and Spanish–American wars.