$5 Opera house Unter den Linden - Berlin Germany 3D model by martinfratric. Available on CGTrader with 82400 polys and 181500 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 123 MB), OBJ (OBJ, filesize: 234 MB), 3MF (3D Manufacturing File, filesize: 30.8 MB), FBX (Autodesk FBX, filesize: 77.4 MB)