The scene on which I had the pleasure to work in Quixel at Epic Games.
Using a lot of Megascans,
Main models made by Wiktor Öhman https://www.artstation.com/disting
Real-time rendering in UE4 with RTX
https://quixel.com/blog/2020/6/22/quixel-mixer-2020-1-2-new-smart-materials-next-gen-texturing