I do think the result is pretty cool. Good job
a few things,
-Ground tiles don't seem to imply any sort of diminishing perspective, giving a flat look.
-First and last pilllar blend into the walls very oddly. What exactly is going on there? Seems like a little more effort and some archeology ref would benefit things a lot.
-Bg pillars have different spacing, don't occur in groups of four like the foreground and are all white. Why white? The immediately adjacent ground isn't washed in nearly as much light.
-You use dark/black shades in the foreground floor stones yet leave the upper regions, inside, above the pillars, beyond the diffusion of outside light, lighter than those little dark details? I'd expect the upper area to be the darkest of all. My eye is drawn up there for no reason. There are no interesting details in the stonework, just flat nothingness. Feels like an accidental void.
