Fort Warren, Civil War-era fort on Georges Island, Boston, US.
The pentagonal granite fortification covers 28 acres at the entrance of Boston Harbor, featuring multiple defensive positions and underground passages.
Built between 1833 and 1861 under Colonel Sylvanus Thayer's design, Fort Warren protected Boston Harbor during the Civil War and World Wars.
The fort served as a prison for Confederate officers, maintaining high standards of care with only 13 deaths among 2,300 prisoners during the Civil War.
Visitors reach the fort via ferry from Boston, with ranger-guided tours available throughout spring, summer, and fall seasons.
The military installation became the birthplace of 'John Brown's Body', which later inspired the creation of 'Battle Hymn of the Republic'.
Location: Boston
Website: https://nps.gov/places/georges-island.htm
GPS coordinates: 42.32028,-70.92778
Latest update: May 27, 2025 13:13
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