The Throne Room of Lordaeron from World of Warcraft. Based on the 'Undercity' concept art by Blizzard Entertainment's Peter Lee. Done as a university project.
This my first full environment in Unreal Engine 4. 187k tris in total. I used Substance Designer for almost the entirety of the texturing. Some particle systems were borrowed from Unreal's starter content and tweaked.
Flythrough