Why do half the cities in Canada have one of those giant needles with a restaurant on top?
Global warming. Once the ice on Greenland and in Canada melts they need a safe place to sit it out. In the event the water comes higher than the tower's height, explosive charges at the foot of the tower will go off so the "restaurant" becomes a flotation device while the (hollow) tower itself will act as a stabilizer.
There is a theory which states that if ever anyone discovers exactly what the universe is for it will instantly disappear and be replaced by something even more inexplicable.
There is another theory which states that this has already happened.