Castle Tower Free 3D model is available on CGTrader for free. Original author: longmpaul.
STL (Stereolithography, filesize: 60.7 KB), OBJ (OBJ, filesize: 54.7 KB), 3DS (3D Studio, filesize: 15.7 KB), FBX (Autodesk FBX, filesize: 46.9 KB), IGE (IGES, filesize: 299 Bytes), MAX (Autodesk 3ds Max, filesize: 41.1 KB), SKP (Sketchup, filesize: 96.5 KB), OTHER (Other, filesize: 14.9 KB)