Im no professional on texturing by any means but with a little tweaking, im sure the tesselation effect could be 'blended' out by using an overlay of sorts such as this Cracked wall texture. Also, by creating a broken patter in the wall texture, it would appear much less rigid and realistic i suppose Sandstone Wall This also, A pillar model could work interestingly. And lastly, to add some more realism to the walls, this Worn effect could be added to break it up and create depth instead of just having a matte texture the whole way round. Btw, this is the sort of 'ambient' lighting Id imagine Ambience Edit, it is looking very promising already and by no means do i mean to force any ideas on you, Im just chuckign them out there because i dont have the whole picture of what youre aiming for :laugh: