$57 Nitra castle - Slovakia 3D model by martinfratric. Available on CGTrader with 10184372 polys and 5792204 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 486 MB), OBJ (OBJ, filesize: 1.46 GB), 3MF (3D Manufacturing File, filesize: 184 MB), TEXTURES (Textures, filesize: 8.64 MB), FBX (Autodesk FBX, filesize: 374 MB), GLTF (glTF, filesize: 225 MB)