America Begins Here 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. Explore over 300 years of Florida history as you make your way through this fortress built in the late 1600s. From its commanding position on the waters of Matanzas Bay, a garrison of Spanish troops safeguarded St. Augustine during the turbulent colonial era. Later English…
Yes — Castillo de San Marcos National Monument Tours accepts reservations. Check the live availability calendar to see open dates and book.
See the map for Castillo de San Marcos National Monument Tours's exact location and directions.
Pick your dates on the availability calendar, then reserve through the official booking link. You can also set an alert and we'll notify you if a sold-out date opens up.