On May 24, the Friends of Fort George and Parks Canada are providing a rare glimpse of the interior of Fort Mississauga. This fort, built on Mississauga Point, is located at the mouth of the Niagara River, and residing directly across from this is the American Fort Niagara. From a strategic standpoint, it was an ideal location in times of war for preventing enemy shipping from entering the river. The British erected the first lighthouse on the Great Lakes here in 1804 and constructed a small gun battery nearby for defensive purposes. When the Americans declared war on the British during the War of 1812, the British underestimated the threat and did little to strengthen their defences in Niagara (now Niagara-on-the-Lake).

During the Fenian uprisings (1865-66), it was occupied by militia, but was considered obsolete by that time and was little used until being abandoned in 1867. During the First World War, the golf course (built in 1875) was closed and the Canadian Expeditionary Force used the grounds for training. Note the tips of a few tents on the right and the graffiti on the sides of the abandoned fort.