Fort Ingoldsby was built during Queen Anne's War in 1709, near the present-day location of Stillwater, on the Hudson River, by Colonel Schuyler. The fort was named for the then Lieutenant Governor of the New York colony. The fort’s intended purpose was …
https://museum.dmna.ny.gov/forts/ingoldsby
Iona Island was bought by the United States Navy in 1899. It is located on the Hudson River, south of Camp Smith. During both world wars, it served as a Navy ammunition supply base. The base became one of the largest of its kind in the nation. On Nove…
https://museum.dmna.ny.gov/forts/iona-island
Fort Irondequoit was built, a town of the same name, on a bluff overlooking Lake Ontario. Built by French forces, under the supervision of General Jacques-René de Brisay de Denonville, who landed there in July of 1687, enroute to the battle at Victor. T…
https://museum.dmna.ny.gov/forts/irondequoit
Fort Izard was built in July of 1814 in Clinton County, on the peninsula of Cumberland Head. The fort served as a heavy battery position and was constructed under the leadership of General George Izard. The fort contained four to eighteen pounders with …
https://museum.dmna.ny.gov/forts/izard
Fort James was renamed by the British in August of 1664; it was previously known as Fort Amsterdam. It was briefly reoccupied by the Dutch as Fort Willem Hendrick in 1673 but was reoccupied the following year. Fort James was destroyed by American forces…
https://museum.dmna.ny.gov/forts/james
Fort Jay was built on Governor’s Island in New York Harbor in 1797. Initially serving as a battery in 1776, it was once garrisoned by the British for a number of years. The fort was upgraded in 1803 and was renamed “Fort Columbus” from 1803 to 1904, bef…
https://museum.dmna.ny.gov/forts/jay
The Jersey Battery was arguably among the strongest fortifications in downtown Manhattan during its time. It was located to the left of Grenadier's Battery in line with present-day Reade Street, just west of Greenwich Street. Built in 1776, the battery …
https://museum.dmna.ny.gov/forts/jersey-battery
Fort Jersey was built in 1776 on the Delaware River at Mohochamack Fork. It was a blockhouse, two miles from the Minisink Forts and Port Jervis. It was torn down around 1790.
https://museum.dmna.ny.gov/forts/jersey
Fort Johnson was built in the 1740s and served as the second fortified stone house built by Sir William Johnson. Situated on the Mohawk River, it operated as a residency during the Seven Years’ War. Today, the stone house still stands, and operates as a…
https://museum.dmna.ny.gov/forts/johnson
