Castle Williams

Castle Williams is a circular fortification of red sandstone on the northwest point of Governors Island, part of a system of forts designed and constructed in the early 19th century to protect New York City from naval attack. It is a prominent landmark in New York Harbor. Together with Fort Jay, it is managed by the National Park Service as part of Governors Island National Monument.

Castle Williams
Governors Island, New York City
View from the Staten Island Ferry on New York Harbor
TypeCircular fort
Height40 feet
Site information
OwnerPublic - National Park Service
Controlled byUnited States of America
Open to
the public
Yes
Castle Williams
U.S. National Register of Historic Places
New York City Landmark No. 0547
Coordinates40°41′34″N 74°01′09″W
Visitation126,000 (2008)
NRHP reference No.72000864
NYCL No.0547
Significant dates
Added to NRHPJuly 31, 1972
Designated NYCLSeptember 19, 1967
ConditionFair
Site history
Built1807
Built byJonathan Williams
In use1808-1840s
MaterialsSandstone, Granite, Brick
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