Check out Navona Square - city - Rome Low-poly 3D model on CGTrader for $24. High-quality mesh by SENSIET: 154641 polys, 102289 vertices. Textured, UV Mapped.
BLEND (Blender, filesize: 28.9 MB), OBJ (OBJ, filesize: 3.47 MB), FBX (Autodesk FBX, filesize: 5.54 MB), DAE (Collada, filesize: 15.1 MB), TEXTURES (Textures, filesize: 11.1 MB), STL (Stereolithography, filesize: 7.37 MB)