National Monument · Florida, United States
Castillo de San Marcos National Monument
Castillo de San Marcos National Monument is a national monument in Florida, United States, covering 19.4 acres (7.8 ha), established in 1924.

Photo: Schwerdf via Wikimedia Commons, CC BY 4.0. Cropped and resized for display.
Park facts
| Park type | National Monument |
|---|---|
| Location | Florida, United States |
| Area | 19.4 acres (7.8 ha) |
| Established | 1924 |
| Managed by | National Park Service |
Every fact above is taken from the sources listed below; anything no source states is left blank rather than guessed.
About Castillo de San Marcos National Monument
The Castillo de San Marcos (Spanish for “St. Mark’s Castle”) is the oldest masonry fort in the continental United States; it is located on the western shore of Matanzas Bay in St. Augustine, Florida. It was designed by the Spanish engineer Ignacio Daza, with construction beginning in 1672, 107 years after the city's founding by Spanish Admiral and conquistador Pedro Menéndez de Avilés, when Florida was part of the Spanish Empire. The fort's construction was ordered by Governor Francisco de la Guerra y de la Vega after a raid by the English privateer Robert Searles in 1668 that destroyed much of St.
Description from the park's Wikipedia article (CC BY-SA), linked in the sources below.
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Frequently asked questions
Where is Castillo de San Marcos National Monument?
Castillo de San Marcos National Monument is in Florida, United States.
When was Castillo de San Marcos National Monument established?
Castillo de San Marcos National Monument was established in 1924, per the source listed at the foot of this page.
How big is Castillo de San Marcos National Monument?
Castillo de San Marcos National Monument covers 19.4 acres (7.8 ha).
Sources
- https://en.wikipedia.org/wiki/List_of_the_United_States_National_Park_System_official_units — Wikipedia list of National Park System official units — unit name, state, official designation.
- https://en.wikipedia.org/wiki/List_of_areas_in_the_United_States_National_Park_System — Wikipedia list of National Park System areas — year established and gross area.
- https://en.wikipedia.org/wiki/Castillo_de_San_Marcos_National_Monument — Wikipedia article — description (CC BY-SA).
- https://www.nps.gov/casa/ — Official park page.







