Castle Williams

Governors Island National Monument

10AM-5PM

Castle Williams - Governors Island National Monument - Castle Williams

Open Wednes­day-Sun­day + Fed­er­al Hol­i­days, 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. 

Click here to sign up for guid­ed tours.