Castle Williams, Governors Island Editorial Image

Castle Williams, Governors Island, NY, August 24th 2019. 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 Fort Columbus, it is managed by the National Park Service as part of Governors Island National Monument.