- Worlds tallest buildings always have a very firm and stable base. Thats means that they have a more weight on the bottom than the top of the structures or otherwise called as low center of gravity.
- In order to make tall structure stable, it must a wide base and good support. An example would be the CN tower; it widens towards the bottom as the four supports spread and that causes more weight. Even though the there is a large circular piece at the top, its still not as wide as its base.
- Another example would be the worlds tallest building, Burj Khalifa. It starts with what looks like a bunch of large coin stacks and as it gets taller some coin stacks stop and eventually one pile is what the highest point of the tower is. Some can even say that it looks like an ice cream cone upside down.
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