Best time to visit
Arrive within the first hour of opening for the shortest queues and best photo light.
Last reviewed June 2026 by James Morgan. AI-assisted, human-edited. Our editorial standards
Explore a 17th-century Spanish stone fort that has guarded St. Augustine for over 450 years.
Castillo de San Marcos has stood watch over St. Augustine for centuries, built to protect the city and its Atlantic trade routes.
What you'll see and do - Explore the fort's robust stone architecture and defensive design - Learn how many cultures shaped the site across 450 years - Take in exhibits and historical information throughout the monument - Enjoy views of the seawall, palm trees, and waterways
No scheduled events listed right now, check the official site for current events.
Visit official websiteFamily-tested advice for a smoother day at Castillo de San Marcos.
Arrive within the first hour of opening for the shortest queues and best photo light.
All ages
Onsite or nearby parking available at 1 S Castillo Dr.
Pack snacks, refillable water bottles and a portable charger to keep the day running smoothly.
Castillo de San Marcos
1 S Castillo Dr, St. Augustine, FL 32084
This attraction has been claimed and verified.
Last updated 6/23/2026
Trusted by millions of US families every year
Find and book unforgettable family days out across the USA with confidence.