The Castillo de San Marcos is considered to be a "walk-in" park. The entrance fee applies to each individual. Tickets are not transferable and cannot be given to other guests.
Adults (Age 16 and above) entrance is $15.00 - valid for 7 consecutive days.
Children (age 15 and under) are admitted free of charge but must be accompanied by an adult.
The Golden Access and Age Passports; the Castillo Annual Pass; and the Interagency Access, Annual, Military, and Senior Passes are honored for free admission in accordance with the terms specified on the card.
Park passes provide free entry for the pass holder and 3 adult guests (age 16 and above). Children (age 15 and under) are free. All passes must be presented with a valid driver's license or state ID.
There are no refunds for weather such as thunder and lightning which will cause the closure of the upper level of the fort. Lower interior rooms remain open during inclement weather.
Castillo de San Marcos Annual Passes are available through Recreation.gov, but purchasing tickets ahead of time will not enable you to skip the entry line.
The City of St Augustine maintains a parking lot in front of the Castillo. The cost is $2.50 per hour which is paid at automated stations which accept most denominations of U.S. coin and currency as well as credit and debit cards.
You may want to consider using the city's parking garage which is only a block away from the Castillo. It is conveniently located and will provide shade for your vehicle.
Only vehicles 21 feet or shorter, including any trailers, are permitted to park in the Castillo lot. The City of St. Augustine provides free parking for larger vehicles at the corner of West Castillo Drive and Riberia Street. Please see map below. The lot is approximately three blocks from the Castillo and visitors may use the Castillo's lot to drop off and pick up passengers.