Operating Hours & Seasons
The Castillo de San Marcos is open to the public from 8:45 AM to 5:15 pm every day of the year except December 25. (The ticket booth closes at 5:00 pm.) The Park grounds are closed from midnight until 5:30 am.
Visitation is lowest from the middle of September through late November.
Visitation is highest June through Labor Day, and quite high on summer and holiday weekends when an average of 3500 people visit the Castillo daily.
School group visitation is quite high February through May. High visitation can also be expected during the December holidays.
Did You Know?
The Spanish planted yucca around their forts and on top of protective walls. Yucca aloifolia grows in thickets reaching 20 ft tall. The trunk is armed with 2 ft. long needle-sharp pointed leaves thus earning it the name "Spanish Bayonet." Castillo de San Marcos National Momument, Florida