Tours & timed entry · Florida
Castillo de San Marcos National Monument Tours — tickets & tours bookable on Recreation.gov, at Castillo De San Marcos National Monument. Official listing facts below, plus how its release and cancellation patterns work.
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.
| Type | Tickets & tours — bookable on Recreation.gov |
|---|---|
| Area | Castillo De San Marcos National Monument |
| Managed by | National Park Service |
| Location | Saint Augustine, Florida |
| Official listing | Recreation.gov — Castillo de San Marcos National Monument Tours |
Tickets and timed-entry inventory on Recreation.gov follows the same physics as campgrounds: a listing-defined release pattern, carts that hold for about fifteen minutes, and sold-out dates that return when plans change — because every ticket in this system can be cancelled, and cancelled inventory comes straight back to the calendar, first-come. The listing text above is the authority for this facility's exact window; our release- windows guide shows how to read any listing's pattern, and how cancellations work explains why "sold out" is a snapshot rather than a verdict.
On Recreation.gov, via the official listing linked in the facts table. itOpened never takes bookings — we publish the data and watch the calendars.
Timed-entry and ticket inventory recycles: abandoned carts return after about fifteen minutes, and cancellations return dates first-come, all season. Re-check at release times and in the final days before your date.
The official listing classifies it as 'Ticket Facility' — the facts table carries the listing's own description of what's included.
Every figure in this article traces to one of the sources above. If a number isn't sourced, we don't print it.
Last updated 2026-10-30.