Uploaded on 2014-11-23 by shadoooow

[1]: https://edxuploads.s3.amazonaws.com/141674975325631.jpg we notice in this picture how the construction building materials are extremely different.the windows of the building in the right hand use glass to give amazing appearance and in the same time compatible with the prupose of using building which is diffucult to use it in the left hand building due to the prupose of using this building