Here's a High poly 3D model of and Imperial Star Destroyer Class from Star Wars V-VI, modeled in Blender and rendered with Cycles.
This comprehensive package includes:
1x Texture Folder containing all texture for the required materials
1x OBJ folder containing all the files to rebuild the model in any 3D modeling software (.obj and .mtl)
1x Autodesk .fbx file
1x Native Blender .blend file
I hope you enjoy, and have lots of fun with it.