Spiral Skyscaper Constuction Site

Need a little construction site in your would, I thought the same way, So, here you go. While I finishing up my new spiral skyscraper, I thought I would have some fun and build a one-off version.
This comes complete with a construction crane pulling up a load of glow-stone, plus loads of materials ready to go on top of the building, plus more at ground level. A Construction elevated is attached to the outside of the building between the spirals. This schematic sits on top of a layer of bedrock, so you can place it anywhere in your would (limited to height of 149 blocks).
To be honest, this is difficult to build, and I may it that way (Love a challenge). Construction begins with covering the outside of the building with a Twisted-pattern of Red and Black stain glass windows, and red and black wool between floors. On top of that, I'm creating a secondary outer circle, where the red and black stain-glass twists the pattern in the opposite direction. This will create my atrium, one block at a time (There is no cut and paste...So much for MCEDIT!). If you look closely, you can see the patterns going both ways.

Enjoy the construction site for now!