Castillo de San Marcos
E218542
Castillo de San Marcos is a 17th-century Spanish stone fortress in St. Augustine, Florida, notable as the oldest masonry fort in the continental United States and a key stronghold in colonial conflicts.
All labels observed (6)
How this entity was disambiguated
This entity first appeared as the object of triple T1957353 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Castillo de San Marcos Context triple: [Siege of St. Augustine (1702), primaryTarget, Castillo de San Marcos]
-
A.
Fort Barrancas
Fort Barrancas is a historic coastal defense fortification located within Naval Air Station Pensacola in Florida, notable for its role in U.S. military history and 19th-century masonry architecture.
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B.
La Fortaleza
La Fortaleza is the historic governor’s mansion and fortress in Old San Juan, Puerto Rico, recognized as one of the oldest continuously used executive residences in the Americas and a UNESCO World Heritage Site.
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C.
Castillo del Morro
Castillo del Morro is a historic Spanish fortress guarding the entrance to Havana Bay, renowned for its strategic coastal defenses and iconic lighthouse.
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D.
Castillo San Felipe del Morro
Castillo San Felipe del Morro is a historic 16th-century Spanish fortress in San Juan, Puerto Rico, renowned for guarding the entrance to San Juan Bay and serving as a key military stronghold in the Caribbean.
-
E.
Fort Moultrie
Fort Moultrie is a historic coastal defense fort on Sullivan’s Island, South Carolina, that played a key role in American military history from the Revolutionary War through World War II.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Castillo de San Marcos Target entity description: Castillo de San Marcos is a 17th-century Spanish stone fortress in St. Augustine, Florida, notable as the oldest masonry fort in the continental United States and a key stronghold in colonial conflicts.
-
A.
Fort Barrancas
Fort Barrancas is a historic coastal defense fortification located within Naval Air Station Pensacola in Florida, notable for its role in U.S. military history and 19th-century masonry architecture.
-
B.
La Fortaleza
La Fortaleza is the historic governor’s mansion and fortress in Old San Juan, Puerto Rico, recognized as one of the oldest continuously used executive residences in the Americas and a UNESCO World Heritage Site.
-
C.
Castillo del Morro
Castillo del Morro is a historic Spanish fortress guarding the entrance to Havana Bay, renowned for its strategic coastal defenses and iconic lighthouse.
-
D.
Castillo San Felipe del Morro
Castillo San Felipe del Morro is a historic 16th-century Spanish fortress in San Juan, Puerto Rico, renowned for guarding the entrance to San Juan Bay and serving as a key military stronghold in the Caribbean.
-
E.
Fort Moultrie
Fort Moultrie is a historic coastal defense fort on Sullivan’s Island, South Carolina, that played a key role in American military history from the Revolutionary War through World War II.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
National Monument
ⓘ
Spanish colonial fortress ⓘ historic site ⓘ masonry fort ⓘ |
| addedToNationalRegisterOfHistoricPlaces | 1966 ⓘ |
| architecturalStyle | bastion fort ⓘ |
| constructedBy | Spanish Empire ⓘ |
| constructedFor |
defense of St. Augustine
ⓘ
protection of Spanish Florida ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| designationDate | 1924 ⓘ |
| endDate | 1695 ⓘ |
| formerName | Fort Marion ⓘ |
| garrisonedBy |
British soldiers
ⓘ
Spanish soldiers ⓘ United States Army ⓘ |
| hasFeature |
bastions
ⓘ
coquina curtain walls ⓘ moat ⓘ ravelin ⓘ |
| heritageDesignation | U.S. National Monument ⓘ |
| locatedIn |
Florida
ⓘ
St. Augustine, Florida ⓘ St. Johns County, Florida NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
historic district of St. Augustine ⓘ |
| locatedOn |
Matanzas Bay
ⓘ
western shore of Matanzas Bay ⓘ |
| managedBy | National Park Service ⓘ |
| materialUsed | coquina stone ⓘ |
| namedAfter |
Mark the Evangelist
ⓘ
surface form:
Saint Mark the Evangelist
|
| notableFor |
oldest masonry fort in the continental United States
ⓘ
oldest stone fortress in the continental United States ⓘ role in colonial conflicts between Spain and Britain ⓘ well-preserved bastion fort design ⓘ |
| opened | late 17th century ⓘ |
| openToPublic | yes ⓘ |
| ownedBy |
United States government
ⓘ
surface form:
United States federal government
|
| partOf |
Spanish Florida
ⓘ
surface form:
Spanish Florida defenses
|
| renamedAs | Fort Marion ⓘ |
| renamedFrom | Fort Marion ⓘ |
| significantEvent |
British siege during Queen Anne’s War
ⓘ
Siege of 1702 ⓘ use during the American Civil War ⓘ use during the American Revolutionary War ⓘ |
| startDate | 1672 ⓘ |
| touristAttraction | yes ⓘ |
| usedAs |
U.S. Army post
ⓘ
military fortress ⓘ prison ⓘ prison for Native Americans ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Castillo de San Marcos Description of subject: Castillo de San Marcos is a 17th-century Spanish stone fortress in St. Augustine, Florida, notable as the oldest masonry fort in the continental United States and a key stronghold in colonial conflicts.
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Castillo de San Marcos coquina fort
this entity surface form:
Castillo de San Marcos National Monument
this entity surface form:
Castillo de San Marcos National Monument
this entity surface form:
Spanish garrison of St. Augustine
this entity surface form:
Castillo de San Marcos garrison
this entity surface form:
Castillo de San Marcos National Monument
demonstrated defensive strength of Castillo de San Marcos
→
defendingForce
→
Castillo de San Marcos
ⓘ
this entity surface form:
Spanish garrison at Castillo de San Marcos
this entity surface form:
Castillo de San Marcos National Monument