Brock's Monument is a 56-metre (185 ft) column atop Queenston Heights, in Queenston, Ontario, dedicated to Major General Isaac Brock, one of Canada's heroes of the War of 1812. Brock and one of his Canadian aides-de-camp, Lieutenant-Colonel John Macdonell, are interred at the monument's base, on the heights above the battlefield where both fell during the Battle of Queenston Heights. The current monument was constructed between 1853 and 1856 and is the second such structure to occupy the battlefield. Parks Canada maintains the monument, the most imposing feature of Queenston Heights National Historic Site.