@Clem
Zürich was just an example how bad animal welfare can be also in much bigger and more famous Zoos than Amneville, also because the talk here was about the small elephant exhibit at Amneville. Zürich has tiny little outdoor cages for apes, no outside exhibits-I know, they want to build a new gorillas what is due to open in 8 Years ! Belive me, the gorilla welfare at amneville is excellent, and I hope, the gorilals wills aty theer altough the Zoos is now suspended from the EAZA.
Gorillas and Polar Bears do not care about artifical trees and rocks-no animal does. Adult Gorillas don't climb very often in trees. The Polar bear exhibit is for two animals in a good szie, offers a huge pool, "rocks", and shadow. In comapre to germany, Amneville has a great exhibit for this species. They could improve it by natural ground instead of stones.
The welfare of all primates and big cats is very good in Amneville. Sure, a circus-style performance of animals-tigers, elephants etc. is not a thing for a zoo in the 21th century,but as I said, the welfare of the performing tigers is in much higherl evel than in circusses and, of course, in some Zoos-they do have 600 m2 large outdoor exhibits with natural ground, shadow,and a pool.I think, no circus can offer that to its big cats.
Please visit Tierpark Berlin and have a look how tigers are kept there...I sure you, the performing tigers at Amneville are doing much better than the tigers at this"Tierpark".