Hey this exhibit looks bigger on your photo then it really is !
Not everything there is bad!Many animals there are in very good condition and most exhibits are good.
Okay it isn't the best zoo in Germany and many people don't like the plastic rocks, but for the animals its very big improvement.
No Orang-Utan outdoor-enclosure was planned. The outdoor-enclosure you can see on the picture, was originally the outdoor-enclosure for the hand-reared great apes.
Now the little outdoor-enclosure is used by the great orangs and there are two orang groups at Aventure Zoo. They have to take turns (alternate) to get to fresh air. It's terrible.
Although it would probably maintain a cage design, would it be impossible for the zoo to expand the outdoor section toward the steel railings? That would give the orangs some more space at least.