I was just exploring some ideas to design bigger sets faster and to procedurally generate lights and complexity.
I end up using emissive planes in particles and tweak the scale seed and numbers until I got a pretty interesting set-up I could just fly trough and explore.
And I loved how unlimited and fast were these potential geometries that didn’t take much to create! And how clues of architecture were appearing without indeed using any buildings.
Scene is made in blender, screenshot from eevee, and slightly post in photoshop.
Hope you like it guys! Cheers!
Here is my Artstation for bigger res or other projects 
https://www.artstation.com/arnaud_imobersteg