Check out Arched portico in the mas Doric order with 3 4 columns Low-poly 3D model on CGTrader for $10. High-quality mesh by seasda: 2128 polys.
SKP (Sketchup, filesize: 479 KB), OBJ (OBJ, filesize: 281 KB), FBX (Autodesk FBX, filesize: 1.13 MB), SKP (Sketchup, filesize: 479 KB), DAE (Collada, filesize: 311 KB), STL (Stereolithography, filesize: 298 KB), 3DS (3D Studio, filesize: 293 KB)