Native blender, made with blender 2.92, render cycles 2.92.
As internal accessories, you can find the elevator, the floors are illuminated up to the 3th floor. The building has 3 floors which can be added or removed.
STL (Stereolithography, filesize: 303 MB), OBJ (OBJ, filesize: 307 MB), BLEND (Blender, filesize: 517 MB), FBX (Autodesk FBX, filesize: 356 MB), GLTF (glTF, filesize: 72.6 MB)