Two different tennis courts with procedurally created textures for the walls inside Blender for Cycles Render. There are also tennis rackets, water bottles, a high chair and tennis balls. Check out the preview images to see day and night versions.
To see the render settings and lighting setup you can check the Blender scene. And in Unity if you want to see the materials just drag and drop the fbx file. Keep in mind that the textured material might not work in Unity.
File Formats: blend, obj, fbx, dae,