High poly and Textures of both, Colosseum and the wall sculpture (relief) link: https://www.artstation.com/artwork/zNGYL
Low poly: Tim GS
I enjoyed this one a lot, all the texture work was done in photoshop and I hand-painted most of it, then I used a bit oz Zbrush and Crazybump. This was PBR, but before Substance, Quixel, etc.