This is one of the most remarkable example of the hability we have to create and redo a bulding. If you know what happenned on September 11th 2001 the Word Trade center collapsed and was completely distroyed. In less than 6 years. It has 541 m.
This is an skyline of New York.
This is a comparative photo describing how high are the buildings we have in the world.
You can see more information about these sky scrappers here.