Japanese Castle (Polygon mesh 3D model) is available on CGTrader for $3. Original author: ct51803-info. Specs: 88798 polys, 103314 verts.
BLEND (Blender, filesize: 1.65 MB), OBJ (OBJ, filesize: 11.7 MB), FBX (Autodesk FBX, filesize: 3.12 MB), STL (Stereolithography, filesize: 8.1 MB)