The fort was never actually attacked, despite being built specifically to defend against potential American invasion.
During the First World War, the fort was repurposed as an internment camp for enemy aliens.
It served as a prisoner-of-war camp again during the Second World War, specifically for German naval officers.
The fort was significantly expanded and strengthened in the 1840s by Colonel John Williams following concerns over the Oregon boundary dispute.
The complex includes a series of vaulted stone casemates that were designed to protect soldiers from artillery shells.
The fort’s architecture is modeled after the British military engineering principles of the Napoleonic era.
Fort Henry is a 19th-century British military fortification situated on Point Henry in Kingston, Ontario, overlooking Lake Ontario and the St. Lawrence River. Originally constructed between 1832 and 1836 to protect the Rideau Canal and the Kingston naval dockyard, it served as a primary defensive post during the Rebellions of 1837. It is designated as a National Historic Site of Canada and is part of a UNESCO World Heritage site associated with the Rideau Canal. The site operates as a living history museum where costumed interpreters demonstrate 1860s-era military drills, rifle firing, and artillery maneuvers. The masonry structure features a dry moat, massive stone ramparts, and interior barracks that replicate historical soldier life. The site also hosts evening sunset ceremonies during the summer months. It is strategically positioned to control the entrance to the St. Lawrence River. The fort currently functions under the management of the St. Lawrence Parks Commission.
The high ramparts overlooking the St. Lawrence River provide the most iconic panoramic views of the water and the fort’s stone architecture.
Bring a windbreaker or extra layers, as the high elevation on Point Henry makes the site significantly windier and cooler than downtown Kingston.
Schedule your visit to align with the scheduled firing of the artillery and musket demonstrations to see the fort in action.
Walk the perimeter of the outer ditch to see the masonry work from the ground level before entering the main courtyard.
Do not attempt to walk along the steep exterior cliff faces or the exterior of the dry moat walls, as they are unstable and restricted.
Operates as a living history site primarily from mid-spring through late autumn; closed during the winter months.
Maintain appropriate distance from performers during musketry demonstrations for safety; follow instructions from guides regarding restricted zones.
