This short film had been produced 3 years ago (somewhere 2009) and was catching my eyes by the brilliant way on how he projected the 3D architectures by presenting it using After Effects.
Let see if you still thing this is a real building.
If you still thing that this is a real building, you should see how they were built. Because it just needed only one person who is the master Alex Roman to produce it. Else I think that he might has his own production house for this.
What I'm trying to say is that it is not built by thousands of people and it is not real.