Uploaded on 2014-11-20 by k_negm

This is a picture of Burj Khalifa in Dubai (tallest tower in the world) when it was still under construction. It has a concrete/steel structure and is covered by glazing and aluminium panels. While Dubai has aluminium and glazing industries, it surely isn't a steel producing country. [1]: https://edxuploads.s3.amazonaws.com/14144530105907806.png