Fort Barrancas (1839) or Fort San Carlos de Barrancas (from 1787) is a historic United States military fort in the Warrington area of Pensacola, Florida, located physically on Naval Air Station Pensacola.
The hill-top fort, connected to a sea-level water battery, overlooks Pensacola Bay, from what is now Naval Air Station Pensacola. Because the hill-top fort was rebuilt of brick (1839–1844), becoming Fort Barrancas, the older, water battery downhill (Baterie de San Antonio, 1787) has also been called Fort San Carlos, separately, being a remnant from the time the hilltop was the wooden (Spanish: Fuerte) Fort San Carlos de Barrancas.
Spanning a multi-century history, the U.S. Army deactivated Fort Barrancas on April 15, 1947. Designated a National Historic Site (NHL) in 1960, control of the site was transferred to the National Park Service in 1971. After extensive restoration during 1971-1980, Fort Barrancas was opened to the