The second-tallest freestanding structure in Canada has been slated for demolition. But unlike the CN Tower or one of Toronto’s many skyscrapers, this behemoth is located in Sudbury. It’s a smokestack.

The Superstack, as it’s known, is owned by Brazil-based Vale and is part of the mining company’s Copper Cliff processing facility. At 381 metres tall it is in Canada second only to the 533-metre CN Tower in height, and would loom over even The One, a 306-metre building under construction at Toronto’s Yonge/Bloor intersection, and destined to be Canada’s tallest building when completed.