Quote:
Originally Posted by BretttheRiderFan
A 400m in Toronto would divert too much attention from the CN Tower, which will remain the focal point of the skyline for as long as it's standing I'd wager.
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That actually made me think - do structures like CN Tower have some structural lifespan? Can you keep a tower like that standing forever if just properly maintained and renovated?
First skyscrapers are soon 100 years old. I wonder if there will be a time when they have to be replaced/rebuilt for being too old and unstable?
In the fictional Life After People documentary series it seems that most buildings are expected to stand up to 200 years when not maintained.