TRAILGRAPH

Drawbridge entrance to the Castillo de San Marcos
National Monument

Castillo de San Marcos National Monument

Florida

Tonight

🌗 46% moon

7.6 h fully dark

Crowds

low

Open today

Open

Entrance

$15

Information

Fee Stations Credit Card Only

Fee Stations are only accepting credit cards for the purchase of entry tickets and passes.

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 and interprets more than 450 years of cultural intersections.

Activities

Topics

Entrance fees

$15.00Entrance - Per Person

Hours & seasons

The Castillo de San Marcos is open to the public 7 days per week, except Thanksgiving Day (fourth Thursday in November) and Christmas Day (December 25). A maximum capacity of 100 visitors in the historic fort at any time will be in effect. First admission is at 9:00 a.m. and last admission is at 5:00 p.m. The Castillo closes and visitors must exit at 5:15 p.m. The park grounds are closed from midnight until 5:30 a.m.

Generally open:

winterspringsummerfall

Hours are reported by the park — verify before you go.

Conditions

Quietest months (fewer crowds): Aug, Sep, Oct

Typical crowds: low

Weather now: Partly cloudy, 84°F

🌦️ 85°/74°

🌦️ 84°/74°

⛈️ 93°/76°

Typical monthly recreation visits · NPS avg 2023–2025 orange months are the quietest by crowds.

Quietest months

Relative crowds by month — lighter is quieter; ringed months are the calmest by crowds.

Jan

73%

Feb

72%

Mar

100%

Apr

78%

May

57%

Jun

59%

Jul

64%

Aug

41%

Sep

40%

Oct

29%

Nov

64%

Dec

86%

% of the busiest month's visits.

Log a sky reading

Measured the sky with an SQM meter or app? Add your reading (16 = city glow … 22 = pristine). Opt in under “Travelers like you” to share it on the community leaderboard.

Accessibility

Accessible RoomsRestroom - AccessibleWheelchair AccessibleAudio DescriptionAccessible Parking

48 audio-described place(s)

Reported by the park — verify before you go.

Parking

Castillo Visitor Lot · 111 accessible spacesaccessible

Not an official safety source — always defer to NPS.gov and rangers for life-safety decisions.

By the numbers

A visual read on Castillo de San Marcos National Monument — its character, trails, sky, and weather.

Park fingerprint

How this park scores across the dimensions travelers care about.

3-day forecast

Daily high and low temperatures (°F).

People & stories

Figures tied to Castillo de San Marcos National Monument — each spans a cross-park journey.

Christopher Gadsden

American Revolution, Politicians Government Officials, South Carolina

Osceola

Native American, Native American History, Seminole

Sir Francis Drake

Battle Of San Juan, Caribbean, Castillo De San Marcos

Passport stamps

Mark the stamps you've collected — they show in your memory and along your routes.

🎫 Museum Store

Places to see

A Living Seawall

A Living Seawall

audio
Artillery Complex

Artillery Complex

audio
Artillery Complex 2

Artillery Complex 2

audio
Become a Junior Ranger

Become a Junior Ranger

Casement 4 Timeline Exhibit

Casement 4 Timeline Exhibit

audio
Castillo Artillery Tour

Castillo Artillery Tour

Castillo Construction Exhibit Room

Castillo Construction Exhibit Room

audio
Castillo Rules & Regulations

Castillo Rules & Regulations

audio
Castillo Stories 360

Castillo Stories 360

Chapel

Chapel

audio
City Gate

City Gate

audio
Courtyard

Courtyard

audio

Audio & media

🎧 Changing Flags · 3 mintranscript

🎧 The Execution Wall · 3 mintranscript

🎧 The Great Escape · 4 mintranscript

🎧 The Dungeon · 4 mintranscript

🎬

🖼

Learn more

2022 Freeman Tilden Award Recipients

View recipients of the National Park Service Freeman Tilden Awards, which recognize outstanding contributions to the practice of interpretation and education by NPS employees.

50 Nifty Finds #39: An NPS Art Factory

Between 1938 and 1941 the National Park Service (NPS) Western Museum Laboratories (WML) created many iconic posters. Often described as “the WPA park posters,” they should be called “the WML posters.” Research reveals more designs than previously thought (including several previously unknown ones), reevaluates what is known about the artists, and argues that modern reproductions have made the designs more significant to NPS graphic identity today than they were in the past.

50 Nifty Finds #45: Holding the Line

The National Park Service (NPS) was only 26 years old when the United States entered World War II. The young bureau faced very real threats to its mission, with increasing pressure to contribute its natural and cultural resources to the war effort even as its budget and staff were slashed. Under the leadership of Director Newton B. Drury, the NPS was able to do its part for the war while maintaining its public trust responsibilities to the American people.

50 Nifty Finds #5: Keeping Their Cool

The park ranger uniform is known the world over. Perhaps the most iconic part of the uniform is the broad-brimmed flat hat. Over the last century, however, many different kinds of hats have been worn by rangers depending on their gender, where they work, the season of the year, and the jobs they do. While a pith helmet may bring up images of Colonial Britain, World War II soldiers, explorers, or people on safaris, for a while it was also be worn by some park rangers.

Archaeology Activity

"One man's trash is another man's treasure." What?! Complete an archaeology activity to discover how "trash" can teach us a lot about people from the past.

Build Your Own Cannon

Experience a cannon firing, examine 3D models of artillery, and build your own paper cannon.

Build Your Own Fort

Do you have what it takes to defend your town? Construct your own fort out of materials you have at home!

Cannon Experiment

Did you know cannons harnessed the power of a chemical reaction to function? Discover more by conducting an experiment using the scientific method to produce a chemical reaction with an Alka-Seltzer cannon. Apply what you learn about chemical reactions to the loading and firing of cannon to understand the reality faced by the gun crews at the Castillo and Fort Matanzas.

Ranger School

Park-grounded courses you can learn with the Ranger.

How Castillo de San Marcos National Monument connects

This park's activities, topics, location, and on-the-ground places — one hop in the graph. Drag to explore; click an activity, topic, or related park to follow it.

Park

Activity

Topic

State

ParkingLot

PassportStamp

Trail

Alert

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