Check out The Nadasdy Castle 3D model on CGTrader for $50. High-quality mesh by buki-zoltan.
STL (Stereolithography, filesize: 1.14 MB), OBJ (OBJ, filesize: 1.63 MB), 3DS (3D Studio, filesize: 531 KB), DAE (Collada, filesize: 2.38 MB), FBX (Autodesk FBX, filesize: 1.75 MB), IGE (IGES, filesize: 299 Bytes), MAX (Autodesk 3ds Max, filesize: 839 KB), SKP (Sketchup, filesize: 5.93 MB), OTHER (Other, filesize: 516 KB)