$24 Vienna State Opera Low-poly 3D model by SENSIET. Available on CGTrader with 210704 polys and 135813 vertices. Check it out on CGHub.
BLEND (Blender, filesize: 32.6 MB), OBJ (OBJ, filesize: 4.56 MB), FBX (Autodesk FBX, filesize: 7.04 MB), DAE (Collada, filesize: 13.6 MB), STL (Stereolithography, filesize: 10 MB), TEXTURES (Textures, filesize: 8.29 MB)