Some large buildings I had to create from concept arts by Lucas Terryn, Julien Plasse and of course Henri Patrier.
Using Toolbag4 for baking and Painter for texturing. Rendered in Blender Cycles.
Part 1: https://www.artstation.com/artwork/B3rLlD
Concepts artists :
https://www.artstation.com/lucasterryn
https://www.artstation.com/ghizbot
https://www.artstation.com/henripatrier
The other artists in the IXION team :
https://www.artstation.com/mael_briffa
https://www.artstation.com/kelis
https://www.artstation.com/valentin_coupe