forts
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Chesters Roman Fort
Chollerford, England
122 CE
Originally known as Cilurnum, Chesters Roman Fort was built around 124 CE as part of Hadrian's Wall in northern England.
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Housesteads Roman Fort (Vercovicium)
Hexham, England
c. 124
The most complete Roman fort in Britain, Housesteads was built around 124 CE as a garrison along Hadrian's Wall.
- Fort Lewis United States
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Alcatraz
San Francisco, California
A notorious federal prison, historic Alcatraz is also a Civil War fortress, the home of the first lighthouse on the West Coast, and the birthplace of the Indian Red Power movement.
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Fort Sumter National Monument
Charleston, South Carolina
1776-1860
On April 12, 1861, the Civil War began when Confederate forces fired on Fort Sumter. Now a national monument, the fort is located on a small island just off of the coast of Charleston, South Carolina.
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Fort Worden
Port Townsend, Washington
A fortification which well illustrates the Endicott system of coastal defenses constructed in the 1890s and early 1900s. This fort, one of the largest posts in the new system, is a rare example of an unaltered Endicott installation.
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Camp Rabb and Fort Duncan, C.S.A. Historical Marker
Maverick County, Texas
Camp Rabb and Fort Duncan, C.S.A. is Texas Historic Marker #672, located in , Maverick County.
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Old Guardhouse - Fort Clark Historical Marker
Kinney County, Texas
Old Guardhouse - Fort Clark is Texas Historic Marker #18, located in , Kinney County.
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Fort Astoria
Astoria, Oregon
1811
Built in 1811 by John Jacob Astor as a fur trading post, this National Historic Landmark played an important role in the dispute between Britain and America over the Oregon Territory.
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Dun Beag Broch and Surrounding Structures, Struan
Bracadale, Scotland
The monument comprises the Iron Age broch of Dun Beag, which is in state care, and a surrounding complex of remains.
- Ticonderoga New York