Fort Carroll, Sea fort in Baltimore County, Maryland
Fort Carroll stands as a hexagonal military structure on a 3.4-acre artificial island in the Patapsco River, featuring thick masonry walls and multiple gun platforms.
Construction of Fort Carroll began in 1847 under the supervision of Robert E. Lee to strengthen the defense system protecting Baltimore Harbor beyond Fort McHenry.
The fort bears the name of Charles Carroll of Carrollton, one of the signers of the Declaration of Independence from Maryland.
The abandoned fort remains inaccessible to the public, but visitors can observe its exterior structure from boats navigating the Patapsco River.
A lighthouse operated on the fort's ramparts from 1853 to 1945, guiding vessels through Baltimore Harbor during the fort's active military service.
Location: Baltimore County
GPS coordinates: 39.21460,-76.51920
Latest update: May 27, 2025 11:32
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