This smokestack looks grim indeed. It stands out as the slimmest and by far tallest on the site. The wide-angle perspective does not justify it really, but compare it with the adjacent building to the right which I guess housed a vertical boiler or so, maybe some 30-40 meters tall. I heard something about 160 meters, but not sure if that's true.

Not just because of its extreme height, but this guy immediately caught my attention and when looking a bit closer...