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Gulf Islands National SeashoreGuards watch swimmers in the water from their yellow lifeguard tower.
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Gulf Islands National Seashore
Curriculum Materials
 
A view of the Advanced Redoubt drawbridge.  

Did You Know?
The Third System fortifications consisted of 42 forts built between 1816 and 1870. They were used to guard all the principal harbors, rivers, and naval yards of the United States. Only the Advanced Redoubt of Fort Barrancas at Gulf Islands National Seashore was built entirely for land defense.

Last Updated: November 03, 2009 at 10:26 EST