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Castillo de San Marcos National Monument

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Castillo de San Marcos Cannons
Castillo de San Marcos Cannons

Castillo de San Marcos Cannons

© Brigitte Nelson
At one time — around 1740 — the gun deck of the Castillo de San Marcos mounted 74 cannons. The gun deck provided a clear view for miles and considering the largest cannon had a range of over three and a half miles, that was far enough to easily defend itself from attacks by land or sea.

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