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25,000 tonnes is about one-fifth as heavy as The CN Tower.
In other words, it's 0.212030 times the weight of The CN Tower, and the weight of The CN Tower is 4.71630 times that amount.
(a.k.a. La Tour CN, a.k.a. Canadian National Tower, a.k.a. Canada's National Tower) (Toronto, Canada)
The CN Tower weighs approximately 117,910 tonnes. The Tower is home to the world's highest glass floor — a viewing area that allows visitors to look straight down 342 m (1,120 ft) to the ground below.
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