Built to defend Pensacola Bay in the 1830s. Self-guided tours open to hikers, bikers, and boaters. It saw heavy use in the Civil War and World War II.
Sources and licences
Guide text adapted from the Wikivoyage article "Gulf Islands National Seashore" by its contributors, available under CC BY-SA 4.0. Read on Wikivoyage · Contributors · CC BY-SA 4.0