National monument

Castillo de San Marcos National Monument

Castillo de San Marcos National Monument is a national monument run by the National Park Service in St. Johns County, Florida. It is open during posted hours; see the visitor center hours below.

Current notices posted by the managing agency. Checked Oct. 5, 2026.

  • Closure: Construction for Seawall Project Starting July 27, 2026, Castillo de San Marcos National Monument will begin construction to replace, raise and rehabilitate the park’s failing seawalls. The historic fort will remain accessible throughout the project. Some areas outside of the fort will be closed for safety. Since July 21, 2026. Until Dec. 31, 2027.

Check current closures and fire restrictions for Castillo de San Marcos National Monument on the managing agency's own page.

Castillo de San Marcos National Monument
Photo: Macapplethorpe, CC BY-SA 3.0

Castillo de San Marcos National Monument map

Castillo de San Marcos National Monument boundary from USGS PAD-US or the managing agency, simplified for display. Not for navigation or legal boundaries.

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Fire restrictions

This unit's own agency alerts list no fire restriction as of Oct. 5, 2026. We do not check a statewide fire-order feed for FL, so that is not a statement that no order exists, and not a green light for a fire. Check with the land manager and your county before you light anything.

County and local burn bans may also apply on private, state, or county land nearby. On federal land, follow the land manager's order; off it, follow the strictest county or local rule that applies. When both touch your trip, obey both.

Common questions

Entrance costs $15 per person on foot or bicycle. An annual pass for Castillo de San Marcos National Monument costs $45. Interagency (America the Beautiful) passes are accepted. The park takes no cash: pay by card or buy a pass online.
Castillo de San Marcos National Monument is open during posted hours; see the visitor center hours below.
Camping is prohibited within the monument; no designated camping areas (as of September 30, 2026). Camping outside campgrounds is not allowed.
Pets are not allowed in Castillo de San Marcos National Monument. They are not allowed on trails.

Fees, passes, and hours

Entrance costs $15 per person on foot or bicycle. An annual pass for Castillo de San Marcos National Monument costs $45. Interagency (America the Beautiful) passes are accepted. The park takes no cash: pay by card or buy a pass online.

Castillo de San Marcos National Monument is open during posted hours; see the visitor center hours below.

Sources: nps.gov, checked 2026-09-30; nps.gov, checked 2026-09-30.

Camping in Castillo de San Marcos National Monument

Camping is prohibited within the monument; no designated camping areas (as of September 30, 2026). Camping outside campgrounds is not allowed.

Source: nps.gov, checked 2026-09-30.

Pets

Pets are not allowed in Castillo de San Marcos National Monument. They are not allowed on trails.

Source: nps.gov, checked 2026-09-30.

Getting there

  • Nearest town: St. Augustine, 0.2 miles

Source: www2.census.gov, checked 2026-09-30.

Public lands next to Castillo de San Marcos National Monument

Measured between the units' boundaries as mapped in USGS PAD-US. Distances are straight line, not driving.

The sentences on this page are generated by software from the sourced records above, not written by hand. How this content is made.