I build this environment level with Unreal Engine 4, 1 year ago. The objective was to build a game level. I build it in less than 2 months and the final size was 32GB. So much fun to create it. My level concept had a hallway passing over the other hallway. It was a good concept and did it. I also for the first time create an asset and for me it was new territory. I did it and have a good experience with it. All the asset are from free package or I found them online for free, only few I had to buy them.
I made two video, a long version and a short one. Watch the video, I think the musical theme fit well the level, I found it online for free.
Eons Temple video long version
Eons Temple video short version