$6.5 Medieval Fortress Model Stronghold of the Old World 3D model by 3dart3d. Available on CGTrader. Check it out on CGHub.
STL (Stereolithography, filesize: 25.8 MB), OBJ (OBJ, filesize: 22.5 MB), PNG (PNG, filesize: 65.4 MB), BLEND (Blender, filesize: 50.7 MB), USDZ (USDZ, filesize: 17.7 MB), GLTF (glTF, filesize: 19.4 MB), FBX (Autodesk FBX, filesize: 70.1 MB), TEXTURES (Textures, filesize: 4.38 MB)