United States
40.6920°, -74.0170°
2001
0.7
Governors Island National Monument preserves the historic northern portion of Governors Island in New York Harbor. The site features two early 19th-century fortifications, Castle Williams and Fort Jay, which played important roles in defending New York Harbor. The island served as a military installation for over 200 years before becoming a public space. The monument is managed by the National Park Service in partnership with the Trust for Governors Island.