$5 Asian Medieval Watchtower Low-poly 3D model by SimonTGriffiths. Available on CGTrader with 2100 polys and 1300 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 103 KB), OBJ (OBJ, filesize: 156 KB), 3DS (3D Studio, filesize: 78.7 KB), ABC (Alembic, filesize: 167 KB), GLTF (glTF, filesize: 12.8 MB), BLEND (Blender, filesize: 712 KB), FBX (Autodesk FBX, filesize: 163 KB), DAE (Collada, filesize: 380 KB), SPP (Substance Painter, filesize: 103 MB), PLY (Ply, filesize: 380 KB), TEXTURES (Textures, filesize: 12.7 MB)