As part of a recent art test, I was instructed to create a modular 3D environment in 5 days. Beyond the spec for the deliverables, I was free to pick what create and my own workflow. This was the result after a few false starts, rendered in UE4. Fitting to a reasonable 12 texturesets at varying high resolutions, it wouldn't be too much of a stretch to optimize these and the lighting for use at runtime. The biggest help however, was the use of IES lighting profiles. These were awesome at getting a realistic feel to the lighting and while it took a good long while to setup, I am extremely pleased with the results considering the time spent.