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(Los Angeles County, California)Former gun battery that protected the Los Angeles Harbor until World War II.
(Mineral County, West Virginia)Built by George Washington in 1755.
(Winneshiek County, Iowa)Ruins of fort built to protect the Ho-Chunk (Winnebago)
(Cape Girardeau County, Missouri)Site of a Civil War fort
Fort D Blockhouse
(Cape Girardeau County, Missouri)Replica stone blockhouse built as a Works Progress Administration project at the site of the Civil War Fort D
(Williamson County, Tennessee)Civil War fort built by the Union Army
(Beaufort County, South Carolina)Civil War Era Fort
(Mason County, Texas)Fort Site with Reconstructed Officer's Quarters
(Charleston County, South Carolina)Historic fort in Sullivan's Island, SC
(Hennepin County, Minnesota)A former military fortification located at the confluence of the Minnesota and Mississippi Rivers in Hennepin County, Minnesota.
Fort Van Meter
(Hampshire County, West Virginia)Mid 18th Century Frontier Fort
(Columbia County, Wisconsin)One of three fortifications built by the army in Wisconsin along the river waterways.
(LaSalle County, Illinois)A prominent rock formation along the south bank of the Illinois River.