Concept and design belong to Thomas A. Szakolczay, see his work here:
https://www.artstation.com/tas
This was a test I put forth for myself to ONLY use the new Zbrush 4R8 tools to make the Hipoly of this sight so I got more used to LiveBools and Zmodeler. Lowpoly was done in 3dsMax, textured with Substance Painter and Designer.