I wanted to create forest scene in Unreal and to my suprise, I met and artwork that looks exactly like picture in my head. So I decide to recreate work from Max Hugo:
https://www.artstation.com/artwork/JlEOGD
I've made custom models for gate and stairs, and used highpoly skull from Petr Sokolov (material for it I've done in Subtance Painter)
https://www.artstation.com/marketplace/p/erAXX/human-skull-anatomy-tool
All other pieces I took from Megascans library.