• Beach walkway to white sandy beach and bluegreen waters

    Gulf Islands

    National Seashore FL,MS

Davis Bayou in Mississippi

Did You Know?

A view of the Advanced Redoubt drawbridge.

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.