First off I wanted to give a big shout out to the kits on BigMediumSmall! (https://www.bigmediumsmall.com/lostcity)
I mainly made this using the Lost City kit, and kitbashing with some megascans assets. It was a great set to work with, and had quite a bit of variety.
This is a piece I've been working on for fun in my spare time, to keep my hands in Unreal. I wish I was better at remembering to take early WIP shots, but I did find one from some very early blockout tests I was doing for shapes and sizes.