This is a concept of a futuristic military defense tower building.
STL (Stereolithography, filesize: 1.02 MB), OBJ (OBJ, filesize: 2.36 MB), 3DS (3D Studio, filesize: 1 MB), PNG (PNG, filesize: 6.09 MB), DAE (Collada, filesize: 1.49 MB), FBX (Autodesk FBX, filesize: 1.39 MB)