This piece was done in about 7 weeks for the Beyond Human level art challenge run by ArtStation. It was based off the awesome concept by Ilya Dykov, which you can find here https://www.artstation.com/artwork/eooBG
I first broke the scene down into manageable chunks and planned what I would need to make. I started grey-boxing to figure out scale and to recreate the shot from the concept, then began working those rough models up one at a time. I used a spline system to create the cables. The textures were done primarily in Substance suite and Photoshop, before being iterated upon slightly with decals inside the engine. To match the lighting I used a cold blue directional light with some atmospheric fog, then some warm orange spot lights casting out from the doors and windows to create a nice contrast. Lastly I used post-processing to clean it up.