$10 Italian cave chapelle entrance building - Photoscan 3D model by virtual-dope. Available on CGTrader with 3000000 polys and 1900000 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 183 MB), OBJ (OBJ, filesize: 430 MB), FBX (Autodesk FBX, filesize: 108 MB), GLTF (glTF, filesize: 348 MB)