Castle Williams

Available Hours

Weekdays 10AM-4:30PM
Saturdays & Sundays 10AM-5PM

Castle Williams is a circular defensive work of red sandstone on the west point of Governors Island in New York Harbor. It was designed and erected between 1807 and 1811, designed by the Chief Engineer of the US Army Corps of Engineers, Lt. Col. Jonathan Williams, for whom the fort is named, and considered a prototype for new forms of coastal fortification. The castle was one component of a larger defensive system for the inner harbor. Now under the care of the National Park Services, Castle Williams is open to the public everyday from May 1 until October 31.

Ranger-led tours will be available on weekends, while visitors can take self-guided tours anytime during the Fort’s open hours.

More information at

Getting There
5 Minutes from Soissons Landing 10 Minutes from Yankee Pier
3 Minutes from Soissons Landing 5 Minutes from Yankee Pier

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