This specific 3D model, "public park-Private Park Landscape 3D model 42", is an asset made available by "Unknown author".
Can be downloaded at "Unknown platform" by following the link.
Usage of this 3d asset is subject to the "Unknown license" agreement.
STL (Stereolithography, filesize: 102 MB), OBJ (OBJ, filesize: 102 MB), 3DS (3D Studio, filesize: 102 MB), DWG (AutoCAD, filesize: 102 MB), DXF (DXF, filesize: 102 MB), FBX (Autodesk FBX, filesize: 102 MB), SKP (Sketchup, filesize: 102 MB), MAX (Autodesk 3ds Max, filesize: 102 MB), LS10 (Lumion, filesize: 102 MB)