Description: Fort Haldimand was built near Cape Vincent in the St. Lawrence River in Jefferson County, New York. It was originally used by French fur traders but was first used militarily by the British in 1778 under the command of St. Leger. The fort was named “Fort Carleton” to honor the previous Governor of Ontario, Major General Sir Guy Carleton, but was later renamed “Fort Haldimand” for then Governor of Ontario, General Sir Frederick Haldimand. The fort was designed as an octagon, and boasted three bastions, each with space for four guns, as well as ditches, magazines, and barracks. However, construction on the fort was never completed, and it was abandoned in 1783 after the conclusion of the Revolutionary War. Despite the Jay Treaty of 1794, the British did not leave the fort, and it became the principal British naval base on Lake Ontario. At the start of the War of 1812, Captain Hubbard, of the American Army captured the fort in June of 1812. Eventually, American forces destroyed and abandoned the fort.