A wooden bench, a plastic bench, and even one made of stone. Just come and sit on it. Great for public space 3D archviz work or for your 3D movie hero to sit down on and read some newspaper.
Concrete blocks left on purpose, as the bench had stood in one place for so long that the soil washed out from under it and the concrete, which was originally not visible, became visible. Perfect for post-apocalyptic setting. 8k textures.