A project I made for my thesis a while ago that I ported to 5.3. I used the original 1831 drawings to model it in blender, I filled the gaps with theaters of the same period and style, made the textures in substance designer and the rest in unreal engine 4.20 if I recall correctly. The lighting is baked in because I tried to use a plausible number of lights (60 just in the chandelier) so it was not feasible to use Lumen. Looking at it I'd change quite a few things but it would've been quite the task so I just adjusted some shader and rebaked the lighting.